Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf70deabe4ed34e…

MALICIOUS

PDF

116.5 KB Created: 2021-07-07 15:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 136a4d8bdd9c00364004ced41cc74611 SHA-1: 35c80824c16da1417d1705b1168624b35ca4fd9c SHA-256: 0cf70deabe4ed34e02a8e922de2e580f304c3a90bd850f33e6138a209ddc9060
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as an image-only document with an action trigger, typical of a phishing lure. It contains multiple links pointing to compromised CMS upload storage, suggesting an attempt to host malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7121

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 116 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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 http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e22e341513---28036706999.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/f4fec827727232c0553160ff401e6fd1/dabofibuzibux.pdf
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/bbbb7b189b5809fd627556f6a3035e72/88383837616.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608706448dd36---kazelewom.pdf
    • http://monkey-do.net/userfiles/file/nonolifosobizepis.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=write+down+the+correct+form+of+the+plural

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