Malicious PDF — malware analysis report

Static analysis result for SHA-256 d332af84691d8ea1…

MALICIOUS

PDF

86.6 KB Created: 2021-03-15 20:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4f012f95a81eb7614c8aecc31cbbdf9 SHA-1: edceacf2f87566ed46ac6c0b3ccadf04fbe3e9b8 SHA-256: d332af84691d8ea109c92213923761b51a1ef116373a35ac935ccde09fa3ba23
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm or redirection mechanism to distribute further malicious content. The presence of external URIs and the ML_NYX_PDF_MALICIOUS heuristic strongly support a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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
  • 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://golowaki.ru/award?keyword=computer+programming+books+in+urdu+pdf PDF link annotation
    • https://cdn.sqhk.co/babijuvawov/UjgMDgc/monument_valley_game_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/likamigid/whiDtgg/13571494092.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382405/normal_5feb8caba2f6a.pdfIn PDF document text
    • http://gagefiwirimat.medianewsonline.com/pabugogazuriwemukikufabe.pdfIn PDF document text
    • https://rolurenogilu.weebly.com/uploads/1/3/4/0/134096536/nezajoj.pdfIn PDF document text
    • https://kolapudavuvoxe.weebly.com/uploads/1/3/4/3/134315715/3520506.pdfIn PDF document text
    • https://filokizufotol.weebly.com/uploads/1/3/4/4/134455434/ridiwenos.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/33024f3aca2f.pdfIn PDF document text
    • https://cdn.sqhk.co/balapakufogo/6gdPijh/cheam_high_school_sixth_form.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/hgdCnbA/color_switch_baller_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467318/normal_602a21b8d113a.pdfIn PDF document text
    • https://ruxunomitebapat.weebly.com/uploads/1/3/1/6/131606858/98ecb1c017.pdfIn PDF document text
    • http://kovamuwaropepu.getenjoyment.net/punebagoketonamifimi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_601a2e8bc73a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_603f69b7c04eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_5fd26265a6495.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/jzx6iiT/nissan_skyline_r34_wallpaper_iphone.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/9792315877.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tobikinos.onlinewebshop.net/nolukaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9900e5e5-f7f6-4914-99c9-4f32c0d83643/sword_art_online_novel_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48972fed-71de-43f5-9f56-00c730190342/vegovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8dca180-2343-48eb-be19-47d02c1564f0/licensed_to_lie_review.pdfIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11782 5436 bytes
SHA-256: 343ba50101af019a2d5ee401f986ada15775178c41ef998d20181f4138a5f3f7
font_01_sfnt_off000129e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E3 10152 bytes
SHA-256: 3c761def4ecec39705f24778fc3965c24c48f1017b75725dd0af703dfa117f61

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