Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0d02e8ad0adacc…

MALICIOUS

PDF

101.6 KB Created: 2020-11-08 00:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfd8ee68326054210c487000393b0624 SHA-1: 89992b15b64e545f64457d0d368920fb4be3588a SHA-256: 5f0d02e8ad0adacc14b1ac8975592866b92dcdf4be004cdf837a50aac72d0de9
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious screenshot lure, containing a single image and minimal text, designed to trick users into clicking embedded links. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external PDF links, suggesting an attempt to create a link farm or distribute further malicious content. The primary malicious URL identified is https://traffset.ru/aws?keyword=red+rhino+fireworks, which is likely used to deliver a secondary payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

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.
  • 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 101 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://traffset.ru/aws?keyword=red+rhino+fireworks
    • https://rutukosawokiw.weebly.com/uploads/1/3/4/3/134318214/9882347.pdf
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5f9f92c052cab.pdf
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f922635cf618.pdf
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f957cc96a354.pdf
    • https://s3.amazonaws.com/muwemivumazulax/66754268662.pdf
    • https://uploads.strikinglycdn.com/files/a58e124c-9964-468f-850f-28da6d5d5165/31214945164.pdf
    • https://uploads.strikinglycdn.com/files/d749020e-c110-42ce-9c93-f7a3a65afe8f/43007141390.pdf
    • https://uploads.strikinglycdn.com/files/6a363029-147a-4dd5-91dc-d7990f11c7a0/dijowojiripu.pdf
    • https://uploads.strikinglycdn.com/files/21995753-61ef-4c76-bc5f-5f26477d21ad/monster_frozen_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/373c88da-9490-41e6-b2a8-bc5375e380ab/xubisiparuzigajarejesawik.pdf

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