Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c00125709fd0f1…

MALICIOUS

PDF

56.5 KB Created: 2021-04-19 19:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac834eb44b4fff105afcf74438cf4ae7 SHA-1: a52b4a435fc19afd56fdb9bbb22f6791e7fcc1dd SHA-256: 17c00125709fd0f1029692646fda7c0f2b76900a65bfa0a9e2b6fb406a00a226
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains or are structured as link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to deliver malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7659

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 https://www.jwico.com/sites/default/files/webform/minokoniniwige.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/tojawi.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/25680057182.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/pagasumoxozodaxatukaliwus.pdf
    • https://www.visitsavannah.com/sites/default/files/webform/nodarinit.pdf
    • https://www.blplegal.com/sites/default/files/webform/lolavojirubopikumu.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/pakajumotarowumomudiro.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/13471650610.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/dakorudi.pdf
    • https://www.jsif.org/sites/default/files/webform/moridiwivomepagaduso.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/noranixuguwetepefosobad.pdf
    • https://www.viachristi.org/sites/default/files/webform/89070061484.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=comentario+biblico+adventista+tomo+5+pdf
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/xegenaxug.pdf
    • https://drones.princeton.edu/system/files/webform/vijebutipide.pdf
    • https://drones.princeton.edu/system/files/webform/janewif.pdf
    • https://community.princeton.edu/system/files/webform/22535495660.pdf
    • https://thesanfordschool.asu.edu/sites/default/files/webform/85266863194.pdf

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