Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8d7c6ee5aa745a…

MALICIOUS

PDF

38.2 KB Created: 2021-06-23 20:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6f52322871e4ec800c680e2203302fae SHA-1: fb25636efc40b8ea216bfd93faf099360c741f9e SHA-256: ae8d7c6ee5aa745a9fecd210af75681272932f58caaab7115b5d9b7b0a0fb7a4
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6900

Heuristics 5

  • 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 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://studiofapas.it/userfiles/files/vuxagubo.pdf In PDF document text
    • https://ludifrance.fr/userfiles/file/22485415019.pdfIn PDF document text
    • https://unosms.us/userfiles/file/90283375316.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5101f0d68---lugigawakanuzi.pdfIn PDF document text
    • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/13216358688.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/wasufinebegatedebonoritid.pdfIn PDF document text
    • https://bistakalikotenetwork.com/userfiles/file/95218705007.pdfIn PDF document text
    • http://buildinggodskingdom.com/webcms/file/dozakelubugig.pdfIn PDF document text
    • http://jcbcharpentebois.com/ressource/site-image/files/5559991552.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=the+sims+4+full+editPDF link annotation

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