Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae90fdf06ab34c64…

MALICIOUS

PDF

76.5 KB Created: 2021-02-19 00:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c462183e5a2c589fb459292edb941b1 SHA-1: 204806c11c6f43571e1017fa36f1355ab2b2d17d SHA-256: ae90fdf06ab34c64a1816786d57b0185bad617a1cb744a641238700c13933cb9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a video game guide, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=warhammer+2+dark+elves+building+guide
    • https://cdn.sqhk.co/ripalufix/DhiYdjP/pancake_art_challenge_kit.pdf
    • https://cdn-cms.f-static.net/uploads/4366995/normal_6019849271fdc.pdf
    • https://cdn.sqhk.co/butiluluvuk/chigBhc/kanejujukezopolinopoped.pdf
    • https://static.s123-cdn-static.com/uploads/4387928/normal_5fee7e2634ce1.pdf
    • https://cdn.sqhk.co/tinolaseja/gghag6s/wings_near_me_now_that_deliver.pdf
    • https://cdn.sqhk.co/metexemoraga/jaamhgM/63466424827.pdf
    • https://cdn.sqhk.co/levuzivanu/av7vp2V/drumstick_ice_cream_flavours.pdf
    • https://cdn.sqhk.co/kunimoxifagi/fjbhj8q/star_trek_starfleet_command_gold_edition_pc_game.pdf
    • https://static.s123-cdn-static.com/uploads/4427514/normal_6000f34360aea.pdf
    • http://sdfsdfsdf.shaketorch.com/kingdom_hearts_1._5_ps4_trophies_guide.pdf
    • https://static.s123-cdn-static.com/uploads/4417023/normal_5fcb3a806772b.pdf
    • http://megalit-korolev.ru/varulutxvbez.pdf
    • https://cdn.sqhk.co/bonidanem/1igdMVB/vuwel.pdf
    • https://cdn-cms.f-static.net/uploads/4417212/normal_600fa994308cb.pdf
    • http://axecheat8.xyz/bowekijawimazuzodabejenone91xs.pdf
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fc94234eaa08.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tasaronusofake.rf.gd/xetifugab.pdf
    • http://renisibupo.rf.gd/samsung_bd-j6300_remote_control.pdf
    • http://bilozepe.rf.gd/o_bondhu_re_hd_video_song.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.

FilenameKindSourceSize
font_00_sfnt_off0000ef33.bin
8c31a4a7407cd1c6ebd728d6c26b0eefb3474e401335aaf782f71991df30a37d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF33 5648 bytes
font_01_sfnt_off00010252.bin
5e9b8924634500be3f66712258b1243a3f31f3f4cdfb571d48b51422494e40c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10252 10140 bytes