Malicious PDF — malware analysis report

Static analysis result for SHA-256 749dd3990583f1c6…

MALICIOUS

PDF

75.7 KB Created: 2021-03-27 17:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e868612849d39d75471d6bc5b079addf SHA-1: d15c57aa8778992621858f877326a5f5912d4984 SHA-256: 749dd3990583f1c6edf231861705d70e6f4a1ead255473bbfdc4a0030d13dbf1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URLs, many hosted on disposable domains, and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, likely to direct users to malicious content or phishing sites. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=how+to+find+geometric+mean+formula PDF link annotation
    • https://cdn.sqhk.co/togareguko/dhcigji/waves_tune_mono_tutorial.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421778/normal_5fdf905868ada.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/AmQjfgj/liwagulekovato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_603651312a1d4.pdfIn PDF document text
    • http://givimemaregudum.sportsontheweb.net/list_of_general_aptitude_formulas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_604a296ab7cda.pdfIn PDF document text
    • https://pulolated.weebly.com/uploads/1/3/0/7/130740140/sunirevenaseg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365601/normal_5ffc9fc739e6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479474/normal_5fe1ffd8b5c4a.pdfIn PDF document text
    • https://rixulajo.weebly.com/uploads/1/3/4/5/134585814/webezifalirogo_sokematejini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_60490a9d9c134.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/rig0Rig/home_workout_no_equipment_app_store.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/81325590031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444115/normal_5fceeb796daf0.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/socio-cultural_environment_definition_wikipedia.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/ven_ven_senor_no_tardes_letra_y_acordes.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/heiigcR/3386541097.pdfIn PDF document text
    • http://tadosuzewamu.medianewsonline.com/can_you_whitewash_with_chalk_paint.pdfIn PDF document text
    • https://cdn.sqhk.co/pitewomepe/jahgVKG/81563136574.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sizemogigu.myartsonline.com/zonume.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/tudunuvuwatoretalirujibud.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_off0000ed40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED40 5216 bytes
SHA-256: d9adce28e0268c8fa5b91b5ef264e466c4f5950d2e0e4ed8babd13a3bdcff387
font_01_sfnt_off0000fefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFC 10012 bytes
SHA-256: 43f0f463926420d2046fa335cc075ebb03d7f0e46b9afa0444440e557d730b40

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