Malicious PDF — malware analysis report

Static analysis result for SHA-256 d764c29f0ffaf602…

MALICIOUS

PDF

48.6 KB Created: 2020-11-22 02:03:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc60df0489d8e194d7b1ef50aa49365 SHA-1: 0b54febabb5a35603143bb6fef245ac8827fdcef SHA-256: d764c29f0ffaf6020d3764e1cee6e419d3a8fc515b3c2d65274bcdb391c1f3e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with a critical heuristic identifying a 'mass external PDF link farm'. One of these links, 'https://traffking.ru/aws?utm_term=weighted+average+in+excel+sheet', is flagged as suspicious. While no scripts were extracted, the PDF structure and the presence of many external links suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malicious content. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5299

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/aws?utm_term=weighted+average+in+excel+sheet
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f91f5501a97f.pdf
    • https://cdn-cms.f-static.net/uploads/4481830/normal_5fb4b0818a5be.pdf
    • https://cdn-cms.f-static.net/uploads/4478926/normal_5fb605dab598d.pdf
    • https://cdn-cms.f-static.net/uploads/4417658/normal_5fa20e8281ffe.pdf
    • https://tojezupemizeraw.weebly.com/uploads/1/3/4/6/134629845/8452915.pdf
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f88d78864d33.pdf
    • https://s3.amazonaws.com/lefemijip/movie_app_er_for_pc.pdf
    • https://s3.amazonaws.com/zakunafu/the_forest_trophy_guide_steam.pdf
    • https://s3.amazonaws.com/wilugugo/belajar_macro_excel_2007.pdf
    • https://s3.amazonaws.com/niwotipugonuvoz/business_letterhead_template_free.pdf
    • https://s3.amazonaws.com/musoxifuvitalo/rangasthalam_audio_songs_free_in_telugu.pdf