Malicious PDF — malware analysis report

Static analysis result for SHA-256 7290205cc6d84348…

MALICIOUS

PDF

37.4 KB Created: 2021-09-27 14:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7b9bbde4f3721a043a4865313e646a60 SHA-1: 5bf0dd4944b8fece5616f41d513eb11241db4c5b SHA-256: 7290205cc6d84348d8d3dd3f4e626a12750e6368cd3b7ce7e083ce9f97bab22c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and the presence of multiple external links, typical of a phishing campaign. The ClamAV detection and ML classifier further support its malicious classification. The file contains numerous URLs hosted on various domains, suggesting a broad phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7998

Heuristics 5

  • 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 37 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 https://philabc.ru/uplcv?utm_term=dragon+to+colour+and+print PDF link annotation
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/6c84ec48cbdb15d0ade7b7cfcdeedbf7/93957844653.pdfIn PDF document text
    • https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/kobipufebabijejuja.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/fudoturivemepatexod.pdfIn PDF document text
    • https://pacpartner.net/images_client/imagesfile/bupenufozifafiduje.pdfIn PDF document text
    • http://lecostationery.com/files/file/dotememisizisomu.pdfIn PDF document text
    • http://chinahongji.com/d/files/nemigodawejakazepoj.pdfIn PDF document text
    • https://thietbivesinhsonhoa.com/webroot/img/files/gatisenab.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/61173819881.pdfIn PDF document text
    • https://cesiedizioni.com/userfiles/file/deriwuvifim.pdfIn PDF document text