PDF malware analysis — malicious · 51a3b99c378e9e45

MALICIOUS

PDF

75.7 KB Created: 2021-03-15 06:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 70fe5d52f46a5abd08fa96f20fc3a93c SHA-1: 78117bfb940f2480bf04396de70d1f08c856a0c9 SHA-256: 51a3b99c378e9e45e4caabee22b88a4bae6c1213eb1bd2aa6487ebb2779fbc70

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to coupons or news, consistent with phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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 https://midufefew.ru/wix?keyword=staples+2020+coupons
- https://cdn.sqhk.co/fujotojaxob/ibegfLA/snowball_io_friv_2017.pdf
- http://goproits.com/jozupevivupegolabisamal6uwzw.pdf
- https://cdn.sqhk.co/jotenitix/iN1hgfR/resident_evil_movie_reboot_news.pdf
- https://cdn.sqhk.co/tefozakozup/AsRhhgn/91735252368.pdf
- https://cdn.sqhk.co/tipefima/sgfXsge/3d_bass_boosted_tamil_songs_download.pdf
- https://cdn.sqhk.co/xenivoronizu/aichg9y/short_life_vs_short_ride_game_online.pdf
- https://cdn.sqhk.co/mawejoxejobe/jhifhi3/65174818510.pdf
- http://reduslimitalia-official.site/65215489207at384.pdf
- http://vsedlyatebya.xyz/xuan_feng_shao_nu_2x20vd.pdf
- http://zapapoberok.iblogger.org/gerekomam.pdf
- http://groby-ritual.online/test_prep_practice_gre_essays6gwgk.pdf
- http://help-copyrightservice.xyz/arms_of_an_angel_mp3lrzak.pdf
- http://lnstagramverifiedbadgeshelpcenters.net/28103810129lxv8l.pdf
- https://cdn.sqhk.co/wifurovud/iahbLhd/jalilijovetota.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://rebipilu.epizy.com/first_aid_for_electrical_burns.pdf
- http://lepuxateg.epizy.com/lusasimorineferetamufubo.pdf
- http://sifopowi.rf.gd/farmacos_coagulantes_y_anticoagulantes.pdf
- http://wikusonusi.rf.gd/guidecraft_kitchen_helper_vs_learning_tower.pdf
- http://zamoguwudegovo.rf.gd/krishna_amritwani_video_song.pdf
- http://roparewuna.rf.gd/xamapijomiwaxupadulovo.pdf
- http://gigitepusiligo.epizy.com/tivizajevipaxejojaniku.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e881.bin` `a6dec431e98b63876fa9f235b227822a57033ca327a01140c39e142f99b5e7d5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE881	5208 bytes
`font_01_sfnt_off0000fa49.bin` `380af61404529421ba47b280cccafecad2db69cd6740a965297d8ac784c84353`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA49	11568 bytes

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