Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0733a2084f70c0…

MALICIOUS

PDF

54.6 KB Created: 2021-04-11 09:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 191b73d9b19c7eb0b69249e8b6ba07d3 SHA-1: 2baad1ca28f6527480c40d6f69a2df5c506bc772 SHA-256: 0e0733a2084f70c09e700e172c7db6616f3e6615fb14eeb13be0cd47c1f07a57
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 and are structured to appear as resume uploads or contact forms, indicating a phishing or spam distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, likely intended to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8773

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://aboss.by/sites/default/files/webform/vobefoxejajizagosoberob.pdf
    • https://architecturaldesigninc.com/sites/default/files/masugikiretige.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/64296936159.pdf
    • https://www.a1touchsolution.nl/sites/default/files/73086307569.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/bukitonixoravutewoluba.pdf
    • https://www.cdcplumbing.com/sites/default/files/webform/contact-us/65589142167.pdf
    • https://www.mothercare.ro/sites/default/files/webform/resumes/tizagoge.pdf
    • http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/13349970620.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/2923424149.pdf
    • http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/89533113822.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=tipos+de+microciclos+y+sus+caracteristicas
    • https://campusrec.princeton.edu/system/files/webform/26909318775.pdf
    • https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/65910459182.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8cf.bin
0d2a2cc5882c2b77c5cb2d6b1a3a7a793edb492865426011b0620f4ed4a32e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CF 5268 bytes

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