Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fef8b853e80b804…

MALICIOUS

PDF

41.6 KB Created: 2021-01-12 11:56:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b211ae32cae4be487941b68b2e8c64c8 SHA-1: ad0be2fb6cc32ccc27af830e2ce56f62e170d0ef SHA-256: 8fef8b853e80b804baa58319e89a1312a023eb7fbf0c002f8028ddd55e2d19b6
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is identified as a phishing lure due to its image-only nature and a click-outward action. It contains a critical-severity heuristic indicating a link to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/aws?utm_term=bartholomew+the+silent+comedy'. This suggests the document's primary purpose is to redirect users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6525

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://ggtraff.ru/aws?utm_term=bartholomew+the+silent+comedy
    • https://site-1247010.mozfiles.com/files/1247010/can_t_new_apple_watch_faces.pdf
    • https://dirotigakavomak.weebly.com/uploads/1/3/4/2/134235834/norujitewi_galigezulufur_wudiruziwedufuz.pdf
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/letekigu.pdf
    • https://static.s123-cdn-static.com/uploads/4385437/normal_5fcf3e361fd14.pdf
    • https://cdn-cms.f-static.net/uploads/4459929/normal_5fd6359ac61da.pdf
    • https://cdn-cms.f-static.net/uploads/4428069/normal_5fe735c498b65.pdf
    • https://cdn.sqhk.co/pezolaje/fiihija/perfect_cuts_barber_shop_corp._lakeland_fl.pdf
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fd0b26f98b79.pdf
    • https://cdn.sqhk.co/lilavokolet/jfPughv/tovijafamigepufuwega.pdf
    • https://cdn-cms.f-static.net/uploads/4486772/normal_5fbd07a3b153a.pdf
    • https://cdn.sqhk.co/peluxisomex/ihhhnii/26806952381.pdf
    • https://cdn.sqhk.co/rusefijow/etjTZjc/korenulimuvidurojaga.pdf

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