Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8061bec2558cf43…

MALICIOUS

PDF

40.6 KB Created: 2020-11-11 20:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7e04df5a12fb2e5824e83721bab8cdc SHA-1: 62198da7dc712d69819d5e96a675cdd0391bc9d1 SHA-256: f8061bec2558cf43585fe685b0c4e7392f5050e45d54f80e893dfba23dfd2b4d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a phishing lure due to its small size and image-only content, designed to trick users into clicking an embedded link. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a campaign to distribute malicious content or drive traffic to phishing sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7393

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://traffine.ru/aws?utm_term=afterlight+2+full+pack+ios
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f8ba07c00395.pdf
    • https://tinozuxitijerel.weebly.com/uploads/1/3/4/5/134528375/1d55bb5732546e.pdf
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f96b68ccdd1f.pdf
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/duposikuziwoniziwi.pdf
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f9201b863c0f.pdf
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5f98eb5678dc2.pdf
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/3203950.pdf
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f8ef80deb32e.pdf
    • https://cdn-cms.f-static.net/uploads/4473415/normal_5fa5f21685f8e.pdf
    • https://cdn-cms.f-static.net/uploads/4472216/normal_5fa709302c286.pdf
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5f970b37a9f6c.pdf
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5fab728e016de.pdf
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f9b7f1b09e37.pdf
    • https://s3.amazonaws.com/titugome/community_christian_academy_ky.pdf
    • https://s3.amazonaws.com/vazisi/molluscum_warts_in_children.pdf

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