Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ad2e73b647acc0…

MALICIOUS

PDF

48.6 KB Created: 2020-12-26 11:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d28230e1052fc5ace1b2b558d81e597 SHA-1: 120144da3b1bddecda4476d7848b38baf89e4e72 SHA-256: b0ad2e73b647acc022fbd530873106ee09af43a3ef050a344753299d57535b7a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm PDF. It contains multiple embedded URIs, with a primary suspicious URL pointing to 'trafffe.ru'. The PDF's structure and embedded links suggest an attempt to redirect the user to a potentially malicious or phishing website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7684

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
  • 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://trafffe.ru/strik?utm_term=survival+manga+anime+planet
    • https://penopamez.weebly.com/uploads/1/3/4/4/134496097/godipejutir.pdf
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5fd2040286fa8.pdf
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5fda5aedf35ba.pdf
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/zozamegibikuxovibar.pdf
    • https://vilaferadir.weebly.com/uploads/1/3/4/7/134771168/jomasabixafez.pdf
    • https://wilowepixamu.weebly.com/uploads/1/3/4/4/134476622/kagixukezajas-fubakasozufot.pdf
    • https://cdn-cms.f-static.net/uploads/4468534/normal_5fa54a2e0bdc4.pdf
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5fd64d0d87913.pdf
    • https://lozatovetifeg.weebly.com/uploads/1/3/3/9/133999134/xivaxajijexevo.pdf
    • https://cdn.sqhk.co/gikunixa/goJhgFg/damise.pdf
    • https://static.s123-cdn-static.com/uploads/4376371/normal_5fc42035d0807.pdf
    • https://s3.amazonaws.com/rimejiguvif/nesakemofase.pdf
    • https://s3.amazonaws.com/zonebon/goodwill_amortization_on_balance_sheet.pdf

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