Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b07d82461f70926…

MALICIOUS

PDF

96.0 KB Created: 2021-02-18 00:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cb6d18dff5be9d49d10482766691b69 SHA-1: d6b88924dc7e15b701c75a7f2f9b9ef879643d32 SHA-256: 0b07d82461f70926e82ef180efb0853b5b7bbd57e1e401fd4604de8e3befc925
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable hosting and known malicious redirectors, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=the+bell+jar+sylvia+plath+summary
    • https://suzoniku.weebly.com/uploads/1/3/4/4/134456843/buvikakudusaz.pdf
    • http://lerob.info/ruwazanupamew065l.pdf
    • https://static.s123-cdn-static.com/uploads/4365536/normal_5fdf54228f536.pdf
    • https://cdn-cms.f-static.net/uploads/4424025/normal_60176ade41f77.pdf
    • https://didegesub.weebly.com/uploads/1/3/2/6/132681352/576807.pdf
    • http://sewonmedix.ru/dulivatepidgxzdm.pdf
    • http://zoomita.fun/64255217699n0myr.pdf
    • http://rubka.space/taps_to_riches_money_hack_apk6y4hu.pdf
    • http://leree4.club/23576279078i4r8c.pdf
    • https://static.s123-cdn-static.com/uploads/4485800/normal_5fdd2644b4de1.pdf
    • http://hurleyshamburgers.com/16714276569mw9eo.pdf
    • https://tiketutowiko.weebly.com/uploads/1/3/5/3/135345961/d3a24.pdf
    • https://pudisemibupar.weebly.com/uploads/1/3/4/0/134096773/674412.pdf
    • https://farunekigevizaj.weebly.com/uploads/1/3/5/9/135976182/mufuzup_bexepinureju_mipok.pdf
    • https://s3.amazonaws.com/wezukep/vunibukugevi.pdf
    • https://s3.amazonaws.com/tezude/hashar_punjabi_song_babbu_maan.pdf
    • https://s3.amazonaws.com/nerugiraxura/30759055164.pdf

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