Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c446fc311fbd13e…

MALICIOUS

PDF

66.5 KB Created: 2021-03-11 14:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: e7d8a04b2f9eaa31d597bf39941c3964 SHA-1: 0359d43833a6597eddcb5e70778a33f9dba6cc62 SHA-256: 7c446fc311fbd13ef99c4cf42b026987c050a94959ea7e80a1625aed1eb04e01
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, a common tactic for phishing or malware distribution. Several heuristics indicate it's a link farm, with some URLs pointing to suspicious domains like ponafet.ru and shoop-fk.ru. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5377

Heuristics 5

  • 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 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.
  • 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://ponafet.ru/award?keyword=complex+carbohydrates+list+pdf PDF link annotation
    • https://cdn.sqhk.co/pinofizulag/jihjzUb/43971669744.pdfIn PDF document text
    • http://shoop-fk.ru/nalifewovanijoebf.pdfIn PDF document text
    • https://cdn.sqhk.co/gasupewu/jlNxji6/fojibinavunute.pdfIn PDF document text
    • http://sethel.xyz/nojawxg7g1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_600f1d4e5dcb7.pdfIn PDF document text
    • https://ponixojezunuto.weebly.com/uploads/1/3/0/9/130969897/a3f85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460954/normal_5fca2fce45859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_60158d38410b2.pdfIn PDF document text
    • http://thepropheticapp.com/refogaderoqoo.pdfIn PDF document text
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/seloki-surovovarapek-tufasaxufizomel-jesokiroliso.pdfIn PDF document text
    • http://pochta-24.cc/is_the_ford_escape_hybrid_reliabley22ny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473637/normal_5fccfb651b2f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_603b354d0e006.pdfIn PDF document text
    • https://fufiwixafuwisu.weebly.com/uploads/1/3/4/7/134770326/dibesogez-jorapiziku.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/OhajeQ6/samurai_jack_game_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72ac0115-d154-42d7-8c81-3a43eaf084d7/tesisudibaxinaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a9a2ff-4c10-4753-90ee-383b187ab84c/who_invented_egyptian_mathematics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c63fb9fe-ee14-46c8-903d-b2b9a0cab7f2/when_the_hens_come_home_to_roost.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/sebeden.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/vuzizanazivum.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/zewez.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/sazuratumumikirufoguji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8828df41-ef33-4007-a622-0ac53d1e3ac8/simple_forex_trading_strategies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1322bde1-bfb7-4f28-a072-9c8d328f242d/riterinelenovanikiguxove.pdfIn PDF document text

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