Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb7e6a7d9d24cf4…

MALICIOUS

PDF

38.9 KB Created: 2021-09-26 00:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cae975d247b3ba7a56edf105d1e0920f SHA-1: 57ee0aeedc75d68ab25a4dc03f9c8b1b83ae33a4 SHA-256: 2cb7e6a7d9d24cf4117059b3bc76c06da7225f139a293a6110ab4f8b74c9f474
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a common phishing lure, utilizing an image-only interface with a hidden clickable action to redirect users to external URLs. The presence of embedded JavaScript and numerous links on disposable hosting suggests an attempt to distribute malicious content or harvest credentials. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

Heuristics 6

  • 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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://garglob.ru/uplcv?utm_term=how+to+factory+reset+a+android+without+password
    • http://htbestcomputer.com/media/ftp/file/59795045171.pdf
    • http://qwerty.pl/_data/file/54961797860.pdf
    • http://pscemetery.com/userfiles/file/78549445285.pdf
    • http://mnwebdesign.dk/userfiles/file/69723922958.pdf
    • https://telechips.com/ckfinder/userfiles/files/79562107290.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613905cfa6cc9---pexerexemek.pdf
    • http://pattarasawat.com/ckfinder/userfiles/files/40960218254.pdf
    • https://jokerprod.net/userfiles/file/motokusis.pdf
    • https://allcondosales.rodeodrivecondosale.com/userfiles/files/54046285045.pdf
    • https://stmarys-perthamboy.com/upload/File/xafuwodasujowenelifadi.pdf
    • https://foundlight.ca/home/foun6192/public_html/files/custom_files/file/36289332588.pdf
    • https://aptitudeclass.com/ckfinder/userfiles/files/49591787525.pdf
    • http://schokobrunnen.com/idata/89573159322.pdf
    • https://suprizpin.com/calisma2/files/uploads/74797358502.pdf
    • http://portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/68276465223.pdf
    • https://biogenetixpharma.com/ci/userfiles/files/dakifemase.pdf
    • https://groupburuema

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