Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd54afed9b8497f…

MALICIOUS

PDF

73.1 KB Created: 2021-06-01 00:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5e1a4f90264568113349f8864aa02d33 SHA-1: fc3b10ed7d8cff742de4dcb65619a32fc79296fa SHA-256: 0dd54afed9b8497faf27ae8148c563e6fec77db5ba7feb3824ab41146109d0f2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable hosting and exhibiting link farm characteristics, suggesting a phishing or malware distribution attempt. ClamAV detection and ML classification confirm its malicious nature. While no scripts were extracted, the presence of multiple external links indicates an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7391

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://archism.ru/pbw?utm_term=what+is+dimensioning+in+technical+drawing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402722/normal_5ff8c80cc8d0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372104/normal_60015e65f0204.pdfIn PDF document text
    • http://supatibu.pbworks.com/w/file/fetch/144428136/73866048780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70a5d94f-77e3-4ce3-bb7a-313414a7538c/kirodati.pdfIn PDF document text
    • http://xojifot.pbworks.com/w/file/fetch/144428370/kowofogorixuxakem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f516fd5-5ed7-44f3-a518-c4a7062cb3b1/95262177164.pdfIn PDF document text
    • http://ruwezebom.pbworks.com/w/file/fetch/144425034/54536179183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3488a5f-dd38-4fb3-84cc-eb4b57d0c3f7/58720229255.pdfIn PDF document text
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    • https://uploads.strikinglycdn.com/files/32e36aeb-2f0a-4c6a-858a-d40dfc5134ba/how_to_bomb_jump_in_botw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46ace1d-7a82-42f9-8a8f-aec8fce5b8a9/38517354238.pdfIn PDF document text
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    • http://vowujepojez.pbworks.com/f/how_to_get_axes_in_lumber_tycoon_2_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ae6c19-d40e-4c73-a7f8-78fa2376bb7f/how_to_inspect_gas_furnace_heat_exchanger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a04290-6cb4-43dc-9cf3-bb3a0201e881/dufatafesuwerulumo.pdfIn PDF document text
    • http://negovijalulu.pbworks.com/w/file/fetch/144419103/vagebaxixa.pdfIn PDF document text