Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ef74f6b89d4354…

MALICIOUS

PDF

59.7 KB Created: 2021-05-03 03:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb42a924b4bbfa14750a62884265ddf4 SHA-1: 5aa8bef47c0067b09999303e9b3edb02d7c65042 SHA-256: 86ef74f6b89d43542e5ecab60f0c069113c7151fceb105a9164e4c8705a0c1ce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6619

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://pelibifir.ru/strik?utm_term=bid+rent+theory+ap+human+geography+definition
    • https://cdn.sqhk.co/loxinesupiva/TrLbgdy/43559283837.pdf
    • http://tederurokeroga.iblogger.org/general_ledger_accounting_spreadsheet.pdf
    • https://cdn.sqhk.co/wimiwupo/gjkhhhg/setilavakobijitawox.pdf
    • https://cdn.sqhk.co/bibolaned/eXIZgeQ/methode_swot_projet.pdf
    • http://rofepanix.iblogger.org/fly_ash_bricks_mixing_ratio.pdf
    • https://cdn.sqhk.co/videgogaf/ijjbje0/detentionaire_tina_voice_actress.pdf
    • http://ginalupajeriw.scienceontheweb.net/55852474620.pdf
    • http://lamatokatov.22web.org/60349423846.pdf
    • https://cdn.sqhk.co/polopomoset/S3REihY/tasuku.pdf
    • https://cdn.sqhk.co/pegidago/wGGpRhe/nazowi.pdf
    • https://cdn.sqhk.co/saboretiki/aBMjjgc/gifedixusawelafid.pdf
    • http://gepokupaburorew.mywebcommunity.org/lopafirozuvevawe.pdf
    • https://cdn.sqhk.co/jarogofef/edswFt0/poached_egg_calories_and_carbs.pdf
    • http://tazikuruwuwozu.22web.org/99416999150.pdf
    • http://mogimetekojubar.scienceontheweb.net/papuxibenegexudatobubaz.pdf
    • https://cdn.sqhk.co/dijabidasu/Cwjagcu/26969938044.pdf
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_6af5775939ce4141b4358a54a9b5e198.pdf?index=true
    • https://b66a6cc6-7028-4fd7-9d19-084b2b27c535.filesusr.com/ugd/4015cf_1596422e9dc44e5d84f64ab530a891cd.pdf?index=true
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_a4bca6479a6b41009248a7023090f03a.pdf?index=true
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_bf4c5decebfb48f88c58dcd930f66f58.pdf?index=true

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