Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b76391f37480ad…

MALICIOUS

PDF

91.4 KB Created: 2021-03-28 23:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bddf20b3acb82de6169df2574f6d2f1f SHA-1: 1f54d46b7b61c77a1888f8b67b619516d8a9c371 SHA-256: c6b76391f37480ade059ac82e2a2a16253e1957921def0010822d450fe5e9681
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were directly extracted, the PDF structure and external links are indicative of a common tactic to lure users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/wix?keyword=pioneer+bdr-xd05b+vs+bdr-xd07b PDF link annotation
    • http://jusapp.club/626669407089dxbw.pdfIn PDF document text
    • http://proita.fun/diferencias_entre_los_animales_y_los_seres_humanose9oga.pdfIn PDF document text
    • https://pumaxodevuk.weebly.com/uploads/1/3/1/8/131872084/c56a8.pdfIn PDF document text
    • http://reliables.ru/72475777535ppq4n.pdfIn PDF document text
    • https://cdn.sqhk.co/wekajibex/gjjhiaR/raid_shadow_legends_champions_to_keep.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/QiaPpje/cotton_classing_usda.pdfIn PDF document text
    • http://fresh-ita.fun/najoborimelaxodarigfssd.pdfIn PDF document text
    • https://mirodogewe.weebly.com/uploads/1/3/4/8/134861862/9001977.pdfIn PDF document text
    • http://ch-redirect.icu/watts_premier_ro-pure_replacement_faucetcbzzf.pdfIn PDF document text
    • https://rixikevepu.weebly.com/uploads/1/3/1/4/131408169/dokadanabadepivuzi.pdfIn PDF document text
    • https://lodufokokafapav.weebly.com/uploads/1/3/5/3/135346761/todesupogafi.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/jcwjfja/image_d_un_singe_qui_mange_une_banane.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/Ooifjaw/41815676838.pdfIn PDF document text
    • http://bigpleasure.ru/jezivuruwab4kv1.pdfIn PDF document text
    • http://rawenspant.online/35345304524jfcwh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bc732cde-fb09-4fee-8ab5-c82a45a1131b.filesusr.com/ugd/2ac701_f4b3e67c116d41509836b51a6206f326.pdf?index=trueIn PDF document text
    • https://d497f082-4895-42de-a72c-038d9367c8a3.filesusr.com/ugd/8e727b_eca944e253694e7dbac25dc465ab3899.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_46c93e3cf367440a92022a6e1f535891.pdf?index=trueIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_e314bb03ec574ab0926930e2617d4869.pdf?index=trueIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_018318610b034d638ae160765caf2506.pdf?index=trueIn PDF document text
    • https://a32e93c2-1aa3-4149-af29-aa5d163ab988.filesusr.com/ugd/40336e_ca6b6fa46742473da3d82cc48e262dff.pdf?index=trueIn PDF document text
    • https://afa032df-bfad-47da-a9c8-c79260182993.filesusr.com/ugd/6f9b04_1d55516466e44e4eac9d796a6738a61e.pdf?index=trueIn PDF document text
    • 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001104e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104E 5224 bytes
SHA-256: 76bde49cef77a829f3cfe3bf5f3272ab8af69e721fb1c32b863c6f8d1918ea47
font_01_sfnt_off0001223a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223A 11536 bytes
SHA-256: 7e86c5d7ab23dd1910e6a7db2b2a3a72c95cfab6bd4ac09bc75d7fc590691371
font_02_sfnt_off00014982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14982 16088 bytes
SHA-256: 7ccd8150e2c48a9748994740f2a0713563e2bc66516285f786c138bc0577823a

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