Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e840a306a645ce…

MALICIOUS

PDF

66.6 KB Created: 2020-12-04 21:59:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 435998d8cc1a48a4a0ebd5d27c454a1a SHA-1: 5000db834b1c1f75873e13b211230f727badf295 SHA-256: d9e840a306a645ceef078e48108737b9f09f51a34aadfd29eb29d466f2d78f12
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7434

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://traffine.ru/aws?utm_term=metabolic+syndrome+guideline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485443/normal_5fbb6c962751a.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/devixenegu.pdfIn PDF document text
    • https://tofojuduvebexaj.weebly.com/uploads/1/3/4/6/134650498/takopidixozajudep.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/xutef_dikak_kobinakafowumi_tivaguxulep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5faf9ef301493.pdfIn PDF document text
    • https://xeforosoxipu.weebly.com/uploads/1/3/4/9/134900432/gamomenexegejupedevo.pdfIn PDF document text
    • https://nadosivilir.weebly.com/uploads/1/3/4/3/134316305/xaxekijawodamula.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/bafufipejiwakukoxev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b4d1b66-7e47-4d69-b80a-5c7efdfd2fc8/xebiba.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/linear_equation_worksheet_stained_glass_window.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/302cc6c0-bdf8-46a6-9996-c7687039e9a4/12312158910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4478f89-6072-417e-a4aa-b50a36c1c660/a2212-_6t_2200kv_outrunner_brushless.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/lascal_buggy_board_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/texas_family_practice_manual_forms.pdfIn PDF document text

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