Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc95b74c2e20bcf…

MALICIOUS

PDF

37.5 KB Created: 2021-10-01 03:35:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 1f49781d8d49e816aaa64ebe30153b36 SHA-1: 981d965d07fac54dfeb6bb6a0571d9f28289e79c SHA-256: 9fc95b74c2e20bcf24ebdd4801d4dc3feeed3b506758dd17b82c1a14310c2358
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is flagged by multiple heuristics as a malicious phishing lure. The document's structure and the presence of numerous external URIs suggest an attempt to redirect the user to a malicious site. The embedded JavaScript likely facilitates the redirection or further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7773

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://sk-massimo.com/js/upload/files/tafub.pdf In PDF document text
    • https://stpatswatertown.org/ckfinder/userfiles/files/xowipolegikinuxabetolazut.pdfIn PDF document text
    • http://cheumst.com/upload/fckeditor/file/jelavuxobuzepojok.pdfIn PDF document text
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/23813282475.pdfIn PDF document text
    • https://xtremefitksa.xbodyksa.com/ckfinder/userfiles/files/43798948006.pdfIn PDF document text
    • https://lotusmarinevn.com/upload/files/66010077458.pdfIn PDF document text
    • http://bckvalumni.org/userfiles/file/tupuxuxitovoz.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/9993610552.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/90206439082.pdfIn PDF document text
    • https://cecprint.com/images/file/bewotomulizinoku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=mini+dayz+2+mod+apkPDF link annotation

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