Malicious PDF — malware analysis report

Static analysis result for SHA-256 e862e206f9fd15d8…

MALICIOUS

PDF

55.8 KB Created: 2021-02-25 13:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95df7736379633c4939392888aef465b SHA-1: 20d690b2d915015adbd44c30918e046a7966f91d SHA-256: e862e206f9fd15d83f15f216ee789b77d7edd93bd8b98edccf6a22ac2905cf18
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to disposable domains and known malicious redirectors, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains metadata related to PDF generation, but the primary malicious activity is driven by the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6699

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/award?keyword=ga-ma785gm-us2h+video+driver
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/ruronujeruvejok.pdf
    • https://sumiloruxefeme.weebly.com/uploads/1/3/2/8/132814276/kuvorurewo-zuluf-fuxulu.pdf
    • http://zugemenelil.medianewsonline.com/93144340459.pdf
    • https://xaxiduxaze.weebly.com/uploads/1/3/5/3/135308656/334326.pdf
    • https://cdn.sqhk.co/nisugewameru/jhtYjcF/56288781924.pdf
    • http://vajamerafimal.iblogger.org/wowetigoginobejufezijama.pdf
    • http://tulavesew.getenjoyment.net/toyota_camry_se_2019_for_sale.pdf
    • https://luwakanit.weebly.com/uploads/1/3/0/9/130969899/pakufojuw-zizijipidasase.pdf
    • https://cdn.sqhk.co/xubipoxeguza/deChgQY/smith_s_grocery_hours_near_me.pdf
    • https://cdn.sqhk.co/joxopejufito/Tgfhj87/zuwuvekugodagegalemiru.pdf
    • https://xatefokagakutil.weebly.com/uploads/1/3/4/1/134108848/nixetof_rerasuzeg.pdf
    • https://vegonivi.weebly.com/uploads/1/3/5/9/135986737/feresaxejufozibej.pdf
    • https://s3.amazonaws.com/sojaxub/myxedema_coma_treatment.pdf
    • https://s3.amazonaws.com/pozokimepe/genetically_modified_crops_india.pdf

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