Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7cc67edb9c047d…

MALICIOUS

PDF

80.7 KB Created: 2021-05-27 15:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 77ef089304dbcc286b34f8705d88e06c SHA-1: bdab663e7447bc3a1528c631e5dc38dbcbfa1ec8 SHA-256: 9f7cc67edb9c047d164d4ce6783c75c76b6c530a5002f927a514626854091d01
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links pointing to disposable domains, indicative of a link farm or SEO manipulation scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to phishing or malware distribution sites. No scripts were extracted, but the PDF structure itself is designed to facilitate the distribution of links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gatodagimisosog.weebly.com/uploads/1/3/1/3/131379801/7758904.pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5ff1149b31aca.pdfIn PDF document text
    • https://zexivavu.weebly.com/uploads/1/3/4/8/134872555/xarozipujalumo_gikoj_temofurolupuru_getuzukejixu.pdfIn PDF document text
    • https://wunebometa.weebly.com/uploads/1/3/5/3/135314425/a481b02e01f.pdfIn PDF document text
    • https://genifefesabido.weebly.com/uploads/1/3/3/9/133999330/seranawod.pdfIn PDF document text
    • https://suvojenedixu.weebly.com/uploads/1/3/4/3/134354738/xitut-fapafid-faxezipi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488842/normal_60067a4865d9d.pdfIn PDF document text
    • https://xuwulusepe.weebly.com/uploads/1/3/5/3/135310973/64c748d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453550/normal_600edb151b259.pdfIn PDF document text
    • https://repemokalit.weebly.com/uploads/1/3/1/8/131856723/0bcba794ba9619.pdfIn PDF document text
    • https://zazobowelukoki.weebly.com/uploads/1/3/0/9/130969428/nugafen-vupikizogupoz-rosegom-keruripimuwu.pdfIn PDF document text
    • https://zokaguwozan.weebly.com/uploads/1/3/0/7/130738936/vanaka-relowefikan-waluvow-botukonolara.pdfIn PDF document text
    • https://fimulumalopa.weebly.com/uploads/1/3/5/3/135326017/vitamuwe_dulawakaxuwan.pdfIn PDF document text
    • https://xolavubapipivuk.weebly.com/uploads/1/3/5/3/135302485/4420244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_60637d3508514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481836/normal_60651cb2c277f.pdfIn PDF document text
    • https://visofebofoxofub.weebly.com/uploads/1/3/0/8/130814652/0928104c3cb8e5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_602263b1b59c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418180/normal_5fc6c9e15ffa0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/3IgsHNHpEfs/wb?keyword=what%20is%20first%20angle%20projection%20in%20engineering%20drawing%20pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5A 5600 bytes
SHA-256: 1820a5e58e3f5fc5755d24a24a9318bda6857691917c877f4eb1a5019eb73d60
font_01_sfnt_off00011189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11189 10504 bytes
SHA-256: 490e8eb83aaf0597a54a34479cb98954d265337d8b5e0932f63c36a2cece3d6e

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