Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb454c1b8ef8ae05…

MALICIOUS

PDF

50.6 KB Created: 2021-03-06 04:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0505e31e3634cfe29e2069e252ff3558 SHA-1: e7d9b0b018226ed221c3a0266593b40880603d9e SHA-256: eb454c1b8ef8ae05fa2c14b80401ab3dab893aa318a8400c3de806fa23d161f9
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6626

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://gimoguvi.ru/aws?utm_term=dirt+devil+platinum+force+vacuum+filter
    • http://vololagabedopi.22web.org/23638400192.pdf
    • https://cdn.sqhk.co/xotolodi/jgjjfat/usa_today_games_and_puzzles.pdf
    • http://kimidenexikox.getenjoyment.net/mezekimogutebozeziv.pdf
    • http://didezidise.22web.org/dragon_ball_super_android_17_figure.pdf
    • http://vazawujuzu.sportsontheweb.net/doxakagolowobojagijew.pdf
    • http://tinesemexogo.mygamesonline.org/charlie_and_chocolate_factory_character_names.pdf
    • https://cdn.sqhk.co/dewozoju/Tzjihdq/meteor_storm_film_2020_trailer.pdf
    • https://cdn.sqhk.co/begokaxawip/jIlheMA/puwulujeberaserupo.pdf
    • http://pekamidakoj.atwebpages.com/what_size_battery_does_a_craftsman_garage_door_opener_take.pdf
    • http://tumosavosaruw.rf.gd/83233311947.pdf
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_6b3ae9ad04ea4529aaff0006399ae872.pdf?index=true
    • https://ac402fee-74f4-49a6-b5a4-6a03c6a057de.filesusr.com/ugd/b0cd75_93ef162f8b8f4cb38b7541ea7bcaf0e1.pdf?index=true
    • https://c504e2ef-f928-4e80-b5b1-fc05046f432e.filesusr.com/ugd/247f25_8ea4792a22354507acfa088ce921bbc7.pdf?index=true
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_a6d8c9a86e1c4fa78f827c2439065a21.pdf?index=true
    • http://donidojirujogid.epizy.com/asimov_foundation_trilogy_ebook.pdf
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_ea4f8e14838244baa367a2c856b70f81.pdf?index=true
    • https://0ac950e2-707a-4e47-8bf4-daface0ea9db.filesusr.com/ugd/356f11_938d9655d81740709bbeddeed14577ee.pdf?index=true
    • https://7a512b58-7189-4bc4-8343-f643fa9054c9.filesusr.com/ugd/1e52da_3b2d33a29b2242bb9e88a192a3b6d64c.pdf?index=true
    • http://roporuti.onlinewebshop.net/selarugofojifafatep.pdf
    • https://8316a071-1c81-4729-bbc9-bb84f51c1359.filesusr.com/ugd/b2ba6b_18050005b9f640fea202151d1b0f769e.pdf?index=true
    • http://wuvoxebegef.rf.gd/brinkmann_turkey_fryer_wont_stay_lit.pdf