Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b4bfd09f23aa0e…

MALICIOUS

PDF

49.6 KB Created: 2020-11-20 23:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a7424c2ebe87b9a57aa34677d35abc9 SHA-1: 2d5c7866ac2d0c30b6c16328e0380bf5e59d8923 SHA-256: f0b4bfd09f23aa0ea666e1a431682f254dfe9ea65959f631613aac7d3be457b1
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, typical of phishing attacks, designed to trick users into clicking a link. The document contains numerous external links, with the primary suspicious URL being 'https://traffine.ru/aws?utm_term=enumeration+of+coliform'. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7800

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 49 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=enumeration+of+coliform
    • https://dibulikari.weebly.com/uploads/1/3/4/2/134235408/08ae5e.pdf
    • https://cdn-cms.f-static.net/uploads/4413850/normal_5fa188734ea18.pdf
    • https://vesexifog.weebly.com/uploads/1/3/4/4/134491049/toripogi.pdf
    • https://cdn-cms.f-static.net/uploads/4490736/normal_5fb37376a3059.pdf
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/4780375.pdf
    • https://uploads.strikinglycdn.com/files/8ed99587-c88a-420f-90dc-4bbe69901366/jezaguke.pdf
    • https://uploads.strikinglycdn.com/files/1752d0f8-a538-40f2-925b-f86f25563c76/tributes_to_soldiers.pdf
    • https://uploads.strikinglycdn.com/files/89a04264-ab02-47b5-8c9b-1613a7b4eba4/rekit.pdf
    • https://uploads.strikinglycdn.com/files/78bda496-b3c6-46d7-bb13-c72629775fd3/you_are_beautiful_in_spanish.pdf
    • https://s3.amazonaws.com/pizivurapab/lenotipule.pdf
    • https://s3.amazonaws.com/suzeduselu/81402707877.pdf
    • https://s3.amazonaws.com/guwutivupudutu/school_term_dates_2017_18_birmingham.pdf

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