Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe340c860276d697…

MALICIOUS

PDF

42.9 KB Created: 2021-01-05 03:18:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65454f27c29e027ba5fb9441eae1da83 SHA-1: e0fb6cd8ed933ff40bf44491a23b1b7fa9ed9adc SHA-256: fe340c860276d697308faff9fd5d143255170ee8e51e8cdfdd5c3210561aea51
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document with an action trigger, typical of a phishing lure. It contains multiple external links, including one pointing to 'trafffe.ru', which is suspicious. The ClamAV detection and ML classifier further support its malicious nature, indicating it likely serves as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9268

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 42 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://trafffe.ru/aws?utm_term=barcode+country+list+pdf
    • https://cdn.sqhk.co/midipumep/KgirPhd/wuzomoxewepele.pdf
    • https://xabetujozuveko.weebly.com/uploads/1/3/4/6/134682227/xomebulilusajer.pdf
    • https://cdn-cms.f-static.net/uploads/4453900/normal_5fa10947c5696.pdf
    • https://s3.amazonaws.com/bewibiwat/nidajugurosamigufiki.pdf
    • https://uploads.strikinglycdn.com/files/2cf6d519-8148-4a9d-a503-f704bcdfd674/giratina_altered_trio_raid_guide.pdf
    • https://uploads.strikinglycdn.com/files/5740e2ed-ab84-4ea8-b006-1b981919c15c/pipako.pdf
    • https://uploads.strikinglycdn.com/files/1fa51772-df01-4430-a376-81f29ecb10f4/jugapob.pdf
    • https://s3.amazonaws.com/roxawo/34325545025.pdf
    • https://uploads.strikinglycdn.com/files/d3cdbfbc-1f90-4694-93c4-458cd7f176f8/tva_generation_schedule_patrick_henry.pdf
    • https://uploads.strikinglycdn.com/files/300c3831-f6b2-496c-bcfb-43c2411d32e0/luganugosegedokudas.pdf

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