Malicious PDF — malware analysis report

Static analysis result for SHA-256 632bc2b8a00af910…

MALICIOUS

PDF

41.6 KB Created: 2020-11-24 07:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70d1659f43a58fb55fdc79f21cdfadfd SHA-1: ecf6e680a5d501cb6f2f9f2455c68e3efa0092f9 SHA-256: 632bc2b8a00af9103494e23ca252076271f0573fa31ce5ad632a33ddb5d82816
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file is identified as an image-only lure, a common tactic for phishing and malware distribution. It contains a clickable link to 'trafffe.ru' which is suspicious and likely leads to a malicious site. The presence of numerous external PDF links, as flagged by the 'PDF_SEO_LINK_FARM' heuristic, further suggests an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9297

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 41 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=blender+32+bit+full+crack
    • https://cdn-cms.f-static.net/uploads/4403418/normal_5fbc79e89c3f7.pdf
    • https://cdn-cms.f-static.net/uploads/4383922/normal_5fa80cfed8ee6.pdf
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5fa7bcbdad3c5.pdf
    • https://galevegu.weebly.com/uploads/1/3/4/5/134507196/31fa5dbcd5.pdf
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8f8f91548ef.pdf
    • https://muvoletad.weebly.com/uploads/1/3/4/6/134642496/weseni_saxogozi_todiwewomav_wumajanilogajo.pdf
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8c9575d877c.pdf
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f922df465538.pdf
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5fb513e3462bb.pdf
    • https://wedagibawarog.weebly.com/uploads/1/3/4/6/134680751/xipovixef.pdf
    • https://uploads.strikinglycdn.com/files/2f1293d5-7e71-4fde-a5bc-e370f80be3b3/67952113859.pdf
    • https://uploads.strikinglycdn.com/files/8a7d8f66-b459-4766-818e-c28518550b62/4198118240.pdf
    • https://uploads.strikinglycdn.com/files/3f21987e-1d2c-426e-95b8-0d1f51713d1f/moxasalaguxewapobu.pdf
    • https://uploads.strikinglycdn.com/files/bb2e7d1d-f66b-4daa-a71c-4955b8f2d1d5/73046007097.pdf

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