Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3516360e598433…

MALICIOUS

PDF

27.76 MB
MD5: 7092a269776cde75c9db09f6f6aeabf0 SHA-1: a264e090f8336a755867d34d3049e2aca4c68f79 SHA-256: 1a3516360e59843388be03042709cedae37a4c55d4ec2120e2aab9c1fa82c856
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and a launch action, indicating an attempt to execute code. The high stream count and JBIG2 decoding filter suggest obfuscation techniques are being used to hide malicious content. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, though the exact nature of the payload cannot be determined from the available evidence. The benign URLs present do not detract from the malicious indicators.

Heuristics 6

  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • JBIG2Decode filter medium PDF_JBIG2
    JBIG2 image decoder present — historically used in zero-click exploits
  • Unusually high stream count medium PDF_MANY_STREAMS
    PDF contains 501+ stream objects — may indicate heap spray or heavy obfuscation
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 32

Files carved from inside the sample during analysis.

FilenameKindSourceSize
jbig2_00_off00000ba3.bin
1b9026de0594670f0f1e622e14610c2a0d44107bd1e1166a07927476c4166fa2
pdf-jbig2-stream PDF JBIG2 stream at offset 0xBA3 28321 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_01_off00007c51.bin
169ca1319e6b62e8787cc5925bb65cbc89f23aea1352d50ac87e2e8977505310
pdf-jbig2-stream PDF JBIG2 stream at offset 0x7C51 29215 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_02_off0000f07d.bin
19ae69c179f4dc6cfffd0a5a5ffc7e594821c63dfaf1f67858ba1ea57effc21d
pdf-jbig2-stream PDF JBIG2 stream at offset 0xF07D 30595 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_03_off00016a0d.bin
186bcec04d3578fbc73353b82306de1f9d1e2f83685ecf5bfd07b6387fb8f2b5
pdf-jbig2-stream PDF JBIG2 stream at offset 0x16A0D 26841 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_04_off0001d4f8.bin
9a32f6cb131682f485653972e7eea8cb61eba71f11026f64b20b7debba198ba4
pdf-jbig2-stream PDF JBIG2 stream at offset 0x1D4F8 24900 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_05_off0002384e.bin
dc4686fffb3dab99ee3aa0399e14865ab0ab6b880efb8d005839288dab4125e9
pdf-jbig2-stream PDF JBIG2 stream at offset 0x2384E 23620 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_06_off000296a4.bin
11330482b90ff1eb813f4c6ff801a932c8548d8ba3c5ea173174e12fe4a543fb
pdf-jbig2-stream PDF JBIG2 stream at offset 0x296A4 34891 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_07_off00032101.bin
2808c330a33ebe4441dd0c109869fc47bdd376af238a676edbf7ca82a2df9195
pdf-jbig2-stream PDF JBIG2 stream at offset 0x32101 25189 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_08_off00038578.bin
b6b1c49330d008f60fe0e6d0e62a6192a2a61ff5a617034277b613a73dd8458f
pdf-jbig2-stream PDF JBIG2 stream at offset 0x38578 29599 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_09_off0003fb29.bin
609d67105709d3508411fabe13cbfdc036fbb4a0cef817b54bfdb1e777383419
pdf-jbig2-stream PDF JBIG2 stream at offset 0x3FB29 37130 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_10_off00048e46.bin
973302dc48ef5a4dd8f86f47173cf355b5c490ffa06d450ba061cb57fe305741
pdf-jbig2-stream PDF JBIG2 stream at offset 0x48E46 39042 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_11_off000528db.bin
acb8572e372ee5c41c0e0063fb3eb0c920a4bc0e070d3f94a257ec128e407d49
pdf-jbig2-stream PDF JBIG2 stream at offset 0x528DB 27063 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_12_off000594a5.bin
3459774a3cd8c8b0ca53433fdafd8d92bcfa08947482d358ee5d2c4fec68c894
pdf-jbig2-stream PDF JBIG2 stream at offset 0x594A5 27254 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_13_off0006012e.bin
64bdc7eafbbb3011e35acc9e31b58aa03e59e931212479339fcf5b84302410a6
pdf-jbig2-stream PDF JBIG2 stream at offset 0x6012E 29558 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_14_off000676b7.bin
37777c89f7e680bddd23a2c1b39102596c4c50c5a33c1ef1601832e5a97639d7
pdf-jbig2-stream PDF JBIG2 stream at offset 0x676B7 32836 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_15_off0006f90e.bin
8dbc61accbdffc0ae284b1d3eb78f694cae74c8d1817f55766b98813c11a14c4
pdf-jbig2-stream PDF JBIG2 stream at offset 0x6F90E 24525 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_16_off00075aee.bin
b35e1fe5c9d0817a80e7200d88ac5a6d3b255222e8d393a1cec0bbe241b7fe9d
pdf-jbig2-stream PDF JBIG2 stream at offset 0x75AEE 27218 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_17_off0007c753.bin
cceeb4bcef1dc60a16869fcb1f222b17e27cc2df17cba57a49f08a6fb2c72658
pdf-jbig2-stream PDF JBIG2 stream at offset 0x7C753 37240 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_18_off00085ade.bin
2cd460d4dd18fa81059264ff19cfb4578490a81ed0184e141df0b13e4baf9c13
pdf-jbig2-stream PDF JBIG2 stream at offset 0x85ADE 31023 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_19_off0008d620.bin
71d4247740abf5116aa6075511468a8cc35564614470eafdc748ac57a91ad029
pdf-jbig2-stream PDF JBIG2 stream at offset 0x8D620 31569 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_20_off00095384.bin
4726716a4fcb1432ceb44e6d70b1ca332c01cf6f660eacb2d765bbaec2ae8764
pdf-jbig2-stream PDF JBIG2 stream at offset 0x95384 32009 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_21_off0009d2a0.bin
ad8ad27ac35e3248290b400a4a30084aeb977b36992d813621f2b6dd89113f3d
pdf-jbig2-stream PDF JBIG2 stream at offset 0x9D2A0 31191 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_22_off000a4e8a.bin
4eebb5e31e0df13f2829d4187672c8655168fff2902dd75d5316d6017324d07e
pdf-jbig2-stream PDF JBIG2 stream at offset 0xA4E8A 33024 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_23_off000ad19d.bin
cdc7698acb84e94a0ca64d9a602484b355c5eb203350c766cff66f2bdda32fb6
pdf-jbig2-stream PDF JBIG2 stream at offset 0xAD19D 27318 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_24_off000b3e66.bin
c83a1117478fa98b3f5c6233e39e1d4bc0270eca754a52a4f3cb7cfe21170009
pdf-jbig2-stream PDF JBIG2 stream at offset 0xB3E66 31104 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_25_off000bb9f9.bin
3d2b1c8ec9f66c15d48a98cbd330b769dae9fd4490842881c224a76af131974f
pdf-jbig2-stream PDF JBIG2 stream at offset 0xBB9F9 32534 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_26_off000c3b22.bin
1110fe0cd0f131da345d3fa38f5b002c60728a9815facc8511c87e68e67bba42
pdf-jbig2-stream PDF JBIG2 stream at offset 0xC3B22 33900 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_27_off000cc1a1.bin
542fc0eb04882a07e7c8ef2e575098eec83ef48705147eda79b9fc030eeb907b
pdf-jbig2-stream PDF JBIG2 stream at offset 0xCC1A1 35849 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_28_off000d4fbd.bin
9e86ae610a62ca90c3e77d0d2f588f17ab8ca3ef745bf8baac01e4b4186b8ff8
pdf-jbig2-stream PDF JBIG2 stream at offset 0xD4FBD 36883 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.
jbig2_29_off000de1e3.bin
8c320a220208f1c0b2316ccfa3bdaa6ff5c32839e1c2f538e62021e0933b292f
pdf-jbig2-stream PDF JBIG2 stream at offset 0xDE1E3 39868 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_30_off000e7fb2.bin
60b4f363d9a898e008e44248a985f44a7d643aea990aa503c23ed0a3ee2430a4
pdf-jbig2-stream PDF JBIG2 stream at offset 0xE7FB2 37028 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
jbig2_31_off000f1269.bin
44cd54fe19ee81cde2b005593b2417052cdfb0b3e92b93878dbb1391a6201b48
pdf-jbig2-stream PDF JBIG2 stream at offset 0xF1269 31154 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.