Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e8b19d58d99c17…

MALICIOUS

PDF

49.0 KB Created: 2021-02-26 18:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c1dd9c39b826a99524cf18bd5dc84aa3 SHA-1: de7d33cdf55d72e9452c53d37be15606711ba08e SHA-256: b0e8b19d58d99c17ba3ba6c038fc3769023b0246d7a7a04dd66971091f6c211c
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9344

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://zajinet.ru/award?keyword=ezgo+kawasaki+engine+oil+filter PDF link annotation
    • https://joxobupapi.weebly.com/uploads/1/3/1/4/131454586/fajonugolutag-tifoberuruz.pdfIn PDF document text
    • https://cdn.sqhk.co/latosagax/cuhbCgg/88611886217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384316/normal_5fc746d8b74d7.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/lifimulidunupi-xaxonar-toluturu.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/hYmQOjc/lightroom_alternative_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/9agfha3/flow_sports_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375909/normal_6028fb8f7bcea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388283/normal_5fc68681482de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404515/normal_6003f47c4a5eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_60226762e1174.pdfIn PDF document text
    • https://cdn.sqhk.co/wabasenenem/vPIggig/90_day_fiance_the_other_way_biniyam_song.pdfIn PDF document text
    • https://xubivotalo.weebly.com/uploads/1/3/0/7/130775972/gilazadimosud.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/qihvibd/star_trek_premium_pinball_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/p9gg5gh/zemisuvixajafuj.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/xegefubuvitibadanidenab.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/9323265104.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/56548551316.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/zogonolabarijumigulu.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/40802950790.pdfIn PDF document text