Malicious PDF — malware analysis report

Static analysis result for SHA-256 67127e5c61f0b5af…

MALICIOUS

PDF

57.4 KB Created: 2021-04-09 09:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d5d8f0226797a79481067ae22718be SHA-1: 49503b446eab5eb60402fc2dd5d4c3fc26750516 SHA-256: 67127e5c61f0b5af004980b2318a9a294ada7f7b574fdeb4d81cc3f5dc16c55b
94 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7545

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.sumnercountyhospital.org/sites/default/files/webform/sinuwoxifazuroli.pdf
    • https://www.a1touchsolution.nl/sites/default/files/43963154407.pdf
    • http://russian-ice-spb.ru/sites/default/files/webform/files/77599308563.pdf
    • https://www.visitsavannah.com/sites/default/files/webform/90994069376.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/68406293253.pdf
    • https://www.jsif.org/sites/default/files/webform/kedoruxanagavapiwo.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/95133977644.pdf
    • https://www.a1touchsolution.nl/sites/default/files/51131620028.pdf
    • https://www.dgs-interparts.be/sites/default/files/55949953827.pdf
    • https://ambrose.edu/sites/default/files/webform/99544266771.pdf
    • http://www.friendlycc.com/sites/default/files/webform/tojatovovezugunubi.pdf
    • https://www.dgs-interparts.be/sites/default/files/42042694998.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/dizage.pdf
    • https://www.dgs-interparts.be/sites/default/files/64751185730.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=aprender+alem%25C3%25A3o+em+pdf
    • https://printandmail.princeton.edu/system/files/webform/ziwilijevugibapuvoboka.pdf
    • https://campusrec.princeton.edu/system/files/webform/47045932069.pdf
    • https://gradfutures.princeton.edu/system/files/webform/fumegefexuwonadijot.pdf

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