Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc8df2d18005a9f…

MALICIOUS

PDF

36.4 KB Created: 2021-09-16 19:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: aa19a744b539a1bccdf308ec61e95da4 SHA-1: ca474cbf1161a82931a4dea42392500ea9fdb75b SHA-256: 0cc8df2d18005a9fb86b0a123dfbd61432b7fa3970d2d9578d2ae303d97d7c06
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic for phishing attacks. The presence of embedded URLs, despite one being marked as benign, suggests an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection further support its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7024

Heuristics 4

  • 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 36 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://sp3siemianowice.pl/userFiles/files/nurofumudazumug.pdf In PDF document text
    • http://firsttimehomebuyerstudy.com/images/file/riluf.pdfIn PDF document text
    • http://geopraxis.it/userfiles/files/75161019047.pdfIn PDF document text
    • https://takitech.hu/userfiles/file/91636350738.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/lorulafevojakem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=fm+touch+steam+androidPDF link annotation

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