Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7902fb3be034d6a…

MALICIOUS

PDF

67.6 KB Created: 2021-01-13 16:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 749fddce67bd973eb5ac12ab1fc4d643 SHA-1: 3f4b56a9173a75d55d6c0d40f54a32fabf456ade SHA-256: d7902fb3be034d6a30b76fb20ff262f6726011e655bc4edd85e570f4b9e79e30
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with at least one pointing to known malicious redirector infrastructure. The document's structure and the presence of many links suggest it is designed to lead users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?utm_term=top+wine+cooler+consumer+reports In PDF document text
    • https://cdn.sqhk.co/kepebeso/yhgif75/top_up_my3_sim_card.pdfIn PDF document text
    • https://site-1176787.mozfiles.com/files/1176787/862901329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403687/normal_5f99e808b9f4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495390/normal_5fad26672d8ec.pdfIn PDF document text
    • https://site-1176181.mozfiles.com/files/1176181/smart_charge_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414867/normal_5fd8d53a026f5.pdfIn PDF document text
    • https://site-1168092.mozfiles.com/files/1168092/troop_clash_of_clans.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/x1Ijh0q/kufuz.pdfIn PDF document text
    • https://site-1171722.mozfiles.com/files/1171722/fesabimipebobubivezajab.pdfIn PDF document text
    • https://site-1197381.mozfiles.com/files/1197381/29560323030.pdfIn PDF document text
    • https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/7878372.pdfIn PDF document text
    • https://site-1179443.mozfiles.com/files/1179443/griseofulvin_side_effects_liver.pdfIn PDF document text
    • https://site-1172367.mozfiles.com/files/1172367/29694707675.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B7 4792 bytes
SHA-256: 9d4f9644d58db186498101d962ed5741f5a20a2354a958c10f5244269cb08049