Malicious PDF — malware analysis report

Static analysis result for SHA-256 655e69dad8ce9a4d…

MALICIOUS

PDF

47.2 KB Created: 2021-05-29 09:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 19d2abb364db957b72141ffe6e426358 SHA-1: 9ed9b50263bffede9116b607c3c0b79c50725417 SHA-256: 655e69dad8ce9a4dbd3bb904a4af0af47bcb9cacef0ccf38f0d8a0a55816b00c
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 0.8240

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=call+of+duty+mobile+apk+and+obb+file+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461211/normal_6046338f144bd.pdfIn PDF document text
    • https://puwaxitakobesod.weebly.com/uploads/1/3/4/1/134109073/5344ea.pdfIn PDF document text
    • https://xomugewobi.weebly.com/uploads/1/3/0/8/130814749/e9a3de81535f80.pdfIn PDF document text
    • https://lutividagij.weebly.com/uploads/1/3/4/8/134896544/zovatufejivet_wikomiba_solesajapago.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5fdd930383f9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466376/normal_6048fa881e0d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478923/normal_5fdecb7ea210f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443342/normal_6026e83c2d2ba.pdfIn PDF document text
    • https://tokubarip.weebly.com/uploads/1/3/1/3/131380438/136edb3dfb86e.pdfIn PDF document text
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/juliwapu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_605876d83f0cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5feb568de34b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475987/normal_5ffe531705524.pdfIn PDF document text
    • https://vobemebu.weebly.com/uploads/1/3/4/3/134383317/vumapafejuxame.pdfIn PDF document text
    • https://pobanebutu.weebly.com/uploads/1/3/4/5/134592169/289dba4ce086ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_6038467c6e99c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_6022c6be8d8e8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7026371-b31a-4a15-9b12-ea8cb5ee779d/zitifopoporudijexozatafaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d75a0ce1-edc0-47b6-8bf6-74f107e6e2ba/fire_evacuation_drill_report_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa2c805-a2a8-4e90-91f5-eb5ea096b4e9/how_fast_is_a_15_hp_outboard_motor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d937903-1d98-4a65-87ed-dd363bc61ea0/9101040455.pdfIn PDF document text

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