Malicious PDF — malware analysis report

Static analysis result for SHA-256 64836931e9ea1172…

MALICIOUS

PDF

41.6 KB Created: 2020-12-07 16:08:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5993e9f21b6a00338c72982a142e1686 SHA-1: ea28abf507f6435d066bcb64191f0fccd9c1a1c9 SHA-256: 64836931e9ea117222f28f5131e7d1b4d4858893fc808a63260455f231240b9a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' and another flagging it as a 'Phishing Trojan'. The primary malicious URL identified is trafffi.ru, which is likely used to host a phishing page or distribute further malware. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5119

Heuristics 4

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=inverse+trig+functions+worksheet+with+answers
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f87561a29867.pdf
    • https://cdn-cms.f-static.net/uploads/4412902/normal_5fa50292e1617.pdf
    • https://cdn-cms.f-static.net/uploads/4450504/normal_5fb91336d438a.pdf
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5fc04b4e20766.pdf
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/bfb53d91.pdf
    • https://cdn-cms.f-static.net/uploads/4446259/normal_5fa891c8a6cae.pdf
    • https://uploads.strikinglycdn.com/files/f2c11d43-3c97-4cf9-b26a-8f9529128e41/starbucks_coffee_passport_notes.pdf
    • https://uploads.strikinglycdn.com/files/f3153a24-e278-4e75-a137-7f662c25b227/alchemist_code_tier_list_march_2019.pdf
    • https://uploads.strikinglycdn.com/files/18a53004-2035-4d01-a280-29e4f76eeeaf/el_carcelero_de_filipos.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.