Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b9927aeb3c74fff…

MALICIOUS

PDF

61.3 KB Created: 2021-03-29 20:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 136510fb785d3a6a84fcb431cb0364c0 SHA-1: 216f0ee0c1569a47a7cd9b483ba70a1ade062f5d SHA-256: 2b9927aeb3c74fffd70f669f8bffe9d4917fa18bc21c0c11b6349186e77abed7
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs and is flagged by heuristics as a link farm on disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or to download further payloads. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9514

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://vilenefex.ru/award?keyword=proof+of+sum+of+arithmetic+series+pdf PDF link annotation
    • http://tlgfree.xyz/sosowewom9lqx8.pdfIn PDF document text
    • http://bitjoms.xyz/nissan_qashqai_n_connecta_2019_manuall5qzu.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/vuxibola.pdfIn PDF document text
    • http://indir-kazan.com/kavasinovurinuvinzlz8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409818/normal_602e4ad8377e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446158/normal_6004e0071d1f4.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/15696774921.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446395/normal_6035e403ac38b.pdfIn PDF document text
    • http://modutomipofa.iblogger.org/radebelegataxunitatasemup.pdfIn PDF document text
    • http://health-top.ru/41890985270z9okv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b1f008-2500-432e-a285-6e0c697d2d8b/ez_go_golf_cart_stopped_running.pdfIn PDF document text
    • http://kujodobiwug.rf.gd/27633130903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/131ac109-ef16-4528-9271-21489a271c1f/38716816647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cc25e7-bbef-47ae-aa53-e6fa8fccf0d5/pojawunupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/940fdf22-ab5b-4fc8-ab8e-06f469d0d807/74775726963.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/dobaxinatiferijibir.pdfIn PDF document text
    • http://filipebed.rf.gd/vakimex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3476cf3e-e9ea-4c7d-8ce6-f8d648cdf79a/how_to_read_violin_notes_for_beginners.pdfIn PDF document text