Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e3dac96a66f6eb…

MALICIOUS

PDF

63.9 KB Created: 2021-06-10 13:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ff4db657fee566d3db27083a27269e83 SHA-1: 868f6948ae020e9092a5b9c0407f6819bf498f08 SHA-256: 42e3dac96a66f6eb7c0847d4258e1f1f06edaa0c26a9699c31f1943be03a38c2
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.6507

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://huntic.ru/pbw?utm_term=roblox+arsenal+aimbot+hacks PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498678/normal_605053d5874e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409122/normal_5ffdbe0e34d98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386337/normal_603dee01330f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501804/normal_5fc7c10e2ad1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_60352689b4090.pdfIn PDF document text
    • https://nepujegoxamo.weebly.com/uploads/1/3/4/3/134380276/jilinavor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_6045857f28d45.pdfIn PDF document text
    • https://lalazifesulalo.weebly.com/uploads/1/3/4/5/134502535/kodirinax-davowuluxadoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_6059b8d3384b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_60bec5e4c6bb1.pdfIn PDF document text
    • https://lasirobazu.weebly.com/uploads/1/3/4/3/134399905/funogexanile-sefatigifipidu-mozasopejopov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368770/normal_6028eb6557bfe.pdfIn PDF document text
    • https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/woribodud-kawipimub-midowisigo-jageduxopapax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_605a754c55e31.pdfIn PDF document text
    • http://bomasasawavi.pbworks.com/f/love_an_illusion_manga.pdfIn PDF document text
    • http://gamaxidad.pbworks.com/w/file/fetch/144535794/boxegukubumeniluw.pdfIn PDF document text
    • http://xosufixemuf.pbworks.com/f/introduction_to_linear_optimization.pdfIn PDF document text
    • http://mupalunava.pbworks.com/f/plotting_points_on_a_coordinate_plane_worksheet.pdfIn PDF document text
    • http://tepuvewi.pbworks.com/f/the_bodyweight_bodybuilder_2.0.pdfIn PDF document text
    • http://bopelijexuf.pbworks.com/w/file/fetch/144450078/88584010513.pdfIn PDF document text
    • http://gufabewa.pbworks.com/w/file/fetch/144457062/9363184438.pdfIn PDF document text
    • http://newubotadov.pbworks.com/w/file/fetch/144544161/what_did_rutherfords_scattering_experiment_show.pdfIn PDF document text

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