Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e6f24af53a2df3…

MALICIOUS

PDF

40.0 KB Created: 2021-09-24 15:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f9842fa74efb55fac25bb31e19e76a6f SHA-1: 00b7dc4edbf2fcecde365d1ce5924c4b0ca46221 SHA-256: 64e6f24af53a2df33d75b6e207c56a4f8b6d61a440cb5dbdc33604eba749d91a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns, and is flagged by ClamAV as a phishing trojan. The document contains numerous embedded URLs, many of which are hosted on disposable domains, suggesting an attempt to distribute malicious content or redirect users to phishing sites. No scripts were extracted, but the overall structure and heuristic firings strongly indicate a malicious intent to deceive the user into clicking a link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 40 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.
  • 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://institutdesante.org/userfiles/file/65792652714.pdf In PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f91f95774b---87666197172.pdfIn PDF document text
    • https://beeshark.ro/app/webroot/files/userfiles/files/38374473286.pdfIn PDF document text
    • http://eros-arena.name/eros/userfiles/file/18936981669.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d7843a35ad---75710522256.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/jitokubapa.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/rotaresabowiwiwexewabukan.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/54976190952.pdfIn PDF document text
    • https://inprovitcaribe.com/ckfinder/userfiles/files/24701295798.pdfIn PDF document text
    • http://www.hkrns.org.hk/ckfinder/userfiles/files/72536222878.pdfIn PDF document text
    • https://hurghadalife.net/userfiles/files/67932804169.pdfIn PDF document text
    • https://thegmsbihta.eruditiontech.com/userfiles/file/vebatujiran.pdfIn PDF document text
    • http://mutitar.com/user_img/files/55516596118.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/milif.pdfIn PDF document text
    • http://bigcool.net/webroot/img/files/85963640728.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=get+apk+for+android+appPDF link annotation

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