Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ee509784ad29a1…

MALICIOUS

PDF

45.7 KB Created: 2021-04-03 02:22:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2440296ce40d9b91b65de76d7e63190f SHA-1: 1f6f79a5c9bbb23338df8627cd9cf3a68379b82c SHA-256: b3ee509784ad29a14b5dbe5f8f757897198fc6b7456f83b81c24b3813cf1f1bf
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to sheet music, directing users to external URLs like https://lozipotod.ru/award?keyword=westworld+black+hole+sun+sheet+music+pdf. This suggests the primary goal is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7498

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://lozipotod.ru/award?keyword=westworld+black+hole+sun+sheet+music+pdf PDF link annotation
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477164/normal_6014fbc7ae925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493867/normal_5fd6d4166493c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465270/normal_603fb92e37bd7.pdfIn PDF document text
    • http://baxusajatos.sportsontheweb.net/3718808056.pdfIn PDF document text
    • http://tapodozinojet.mypressonline.com/16637248959.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/f6dbKge/fupedawuw.pdfIn PDF document text
    • http://luxusirozutifud.22web.org/biostatistics_for_public_health_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366969/normal_5ff95df1c341b.pdfIn PDF document text
    • https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_b192edc841744749a0488412e0a3712b.pdf?index=trueIn PDF document text
    • https://c22e5cf4-338a-4003-9cad-c1cb0be29285.filesusr.com/ugd/3db607_37dc346f188148fb8ad3b6e5ca13b70a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e4fc8fd-38c5-48fb-ba1f-6d4884556333/99822924887.pdfIn PDF document text
    • http://bexalawisilinot.epizy.com/zomakevodigamivogujabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd104fa-d083-4ad9-b3dd-e11a2b4ed49a/mother_tongue_amy_tan_rhetorical_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/902bd758-6915-4b45-abb6-e73e466ad416/pagaxemotafige.pdfIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_5c1df6778bf94cc5a8d38b9daf766344.pdf?index=trueIn PDF document text
    • https://034b020c-baab-45d1-b3ff-c950d21f9178.filesusr.com/ugd/3c93bc_24882fcf8e5f4b0ba669acd3544af20c.pdf?index=trueIn PDF document text
    • https://7d14b3fe-44ab-47f5-a5a4-fb5d7998febd.filesusr.com/ugd/ba499c_3143a0de28c141279a8bec4eb0cb2658.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2202e34f-dcb7-4b67-b357-5d05224234ad/what_is_the_difference_between_a_commissioned_and_a_non-commissioned_officer.pdfIn PDF document text