Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff34f8e7a670afa…

MALICIOUS

PDF

41.4 KB Created: 2021-09-20 22:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 362db2926e4d51963979405b625e8fa2 SHA-1: d0a44202dcffd91a0e8f692282dc1878bd2569db SHA-256: 1ff34f8e7a670afaa82f69118dca45ef93e41b28a9ac33907dbca15c0550154d
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing an actionable URI. The presence of multiple disposable links on distinct hosts further supports this, suggesting an attempt to redirect users to malicious content. ClamAV detection and ML classification confirm its malicious nature, likely as a trojan downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6331

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 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.
  • 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://allytemp.ru/uplcv?utm_term=holt+algebra+2+pdf
    • http://daehnfeldt.com/userfiles/file/purikimad.pdf
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/68791858535.pdf
    • http://hawaiianhunareiki.it/file/71893877078.pdf
    • http://anipetkingdom.com/webroot/img/files/wedivetawomubebimoterem.pdf
    • https://msiutilities.net/documents/sobinavimusaloluziwibir.pdf
    • https://shen-su.eu/gfx/userfiles/files/kesulexafabiretuzunegize.pdf
    • http://www.sauminandy.com/fckimages/file/63457532167.pdf
    • https://classoft.ro/userfiles/file/36946333474.pdf
    • http://nanouklid.cz/upload/file/vibaxobukor.pdf
    • http://hacsbathtarntaran.org/~/userfiles/file/39300898434.pdf
    • https://vetregistr.com/ckfinder/userfiles/files/mefikipifi.pdf
    • http://ledspectrumthai.com/ckfinder/userfiles/files/56723925347.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.