Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8a9719f1a54444…

MALICIOUS

PDF

64.0 KB Created: 2021-09-11 15:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 481015e02eb22c014a936571a22d80d3 SHA-1: 6beba3d2fe1ad823e543bd4ec6ad3b8121879a94 SHA-256: 3e8a9719f1a5444475de4fe58ddcd6c1590149993e39986e21dcde911404269e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one pointing to a disposable domain and flagged as a link farm. ML and ClamAV heuristics strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were extracted, the structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8329

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613baa9f4d5f6---folanifoxaxane.pdf In PDF document text
    • http://msmzizkov.cz/data/dokumenty/golisalogusijutukevek.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/javibudotogoke.pdfIn PDF document text
    • http://biblioteka-belzec.pl/upload/files/ledidisorasepaxigegiv.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/16137cde08356f---30098409639.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/16978757611.pdfIn PDF document text
    • http://mtsskzy.com/userfiles/file/84014098295.pdfIn PDF document text
    • http://ski-experience-japan.com/images/blog/file/takufaweniwebakez.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/82949962944.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/79362473677.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/35215669495.pdfIn PDF document text
    • http://papienbanana.com/user_file/file/96839002865.pdfIn PDF document text
    • http://vinhthuan.vn/upload/files/83895621530.pdfIn PDF document text
    • https://free-spirit-city.eu/uploads/wysiwyg/files/zegokaramiganoluxoxakinit.pdfIn PDF document text
    • https://wilocom.ro/ckfinder/uIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=top+torrent+movie+download+sitesPDF link annotation

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