Malicious PDF — malware analysis report

Static analysis result for SHA-256 933a21e6bdd63bfd…

MALICIOUS

PDF

69.2 KB Created: 2021-02-27 02:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 011da5607db21efd67bcc6ef1903b614 SHA-1: 38588ac411e7706ed7ee41644946711882d97d32 SHA-256: 933a21e6bdd63bfd65e4b51402d405664d29b1519ac374a9a0ad1f8b1b0cbfc4
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://dafemum.ru/strik?utm_term=behringer+xenyx+1202fx+mixer+with%252Feffects In PDF document text
    • http://wurilozi.scienceontheweb.net/how_to_read_the_violin_notes.pdfIn PDF document text
    • https://sesuxaned.weebly.com/uploads/1/3/5/3/135349378/f2e23dabaeefd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489052/normal_600acd13dcecf.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/nevurezagavoleg.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/the_makers_diet.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/pevenuj.pdfIn PDF document text
    • https://logesili.weebly.com/uploads/1/3/5/3/135389335/1180456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477649/normal_5feb486eaddff.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/bakipirekugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/52624946525.pdfIn PDF document text
    • http://tabomojepudidu.epizy.com/business_letter_format_template.pdfIn PDF document text
    • http://sasugokomelu.rf.gd/calculadora_para_pasar_mililitros_a_gramos.pdfIn PDF document text
    • http://pamubaj.epizy.com/puzexa.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/36002514353.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/37732660144.pdfIn PDF document text
    • http://mutelikatiseza.rf.gd/does_red_wine_make_your_belly_fat.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_off0000d140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD140 5728 bytes
SHA-256: 3116b4ccc1c9b39091bc145e738a43ceefa34fe7cf9c07421f10c38925d12d8e
font_01_sfnt_off0000e4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D0 10280 bytes
SHA-256: 9bb9184489d7e2f01534f2c054649d0eae2d8685855da07a3d6f33dd2682eeb0

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