Malicious PDF — malware analysis report

Static analysis result for SHA-256 695f4cda279cd979…

MALICIOUS

PDF

37.2 KB Created: 2021-05-19 23:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74123b4e3866914e74e06dd9ec92037b SHA-1: 6ccbad444f54e40096e55ffd9d20a5017d93883f SHA-256: 695f4cda279cd979f3ca4d9a8512fc8e59ddba99d5cd4aa566aea4ab52bd63a2
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates that the document links to multiple compromised WordPress upload directories, suggesting an attempt to host malicious files. ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6183

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 37 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 https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/4d2654a83d4e4609949b85d06b9c6891/87664531908.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608997549df06---foturegilow.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/07752cae4b6a5cfa03d97993a50a997a/32437776252.pdf
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779c6edfc09---zotakafuruzopimutatolasur.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/9a01b1bd9f5db5eacec86837fdf63ff1/juxolokizirebow.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/201658e64d44aeafca3f4ab330c9c2c0/49852397149.pdf
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/fb7b85b59579d50c793a4ebaae477dae/26813623009.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=algebra+1+common+core+textbook+pdf+answer+key

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