Malicious PDF — malware analysis report

Static analysis result for SHA-256 e256c3bee367a14f…

MALICIOUS

PDF

80.2 KB Created: 2021-03-21 09:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4bdb7033ac0b5423d9d181f2f9bc1fff SHA-1: 508dcae7d3da28bea10fbc435649d1490c8f23f2 SHA-256: e256c3bee367a14fb7d7352c8fc3b131072e5469f99a098d38a8b54daaff6236
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The document contains numerous embedded URLs pointing to external domains, suggesting a phishing or malware distribution attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to create a link farm on disposable hosting, further supporting the malicious intent.

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://maypoin.ru/award?keyword=toxoplasmosis+cerebri+adalah+pdf PDF link annotation
    • https://cdn.sqhk.co/ruwonumatag/kggeqii/nididelajaxev.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/b0jhTji/sdgr_ibanez_bass_guitar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_60339165207fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454679/normal_5fff3e3a9982a.pdfIn PDF document text
    • https://jiparebifipi.weebly.com/uploads/1/3/4/6/134638028/ad1b2.pdfIn PDF document text
    • https://cdn.sqhk.co/rudugebakivo/jgUhjjb/world_war_z_game_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/Tsij4gg/siturupubif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_60119fad90229.pdfIn PDF document text
    • https://sofovelo.weebly.com/uploads/1/3/1/3/131379060/c076b.pdfIn PDF document text
    • http://palopepidek.mypressonline.com/kenmore_elite_mini_fridge_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/iacj9jf/samanese._ir_99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390350/normal_603a0a0e16ec0.pdfIn PDF document text
    • http://pozufopajosel.mypressonline.com/60492969619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_600b8f3816a42.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ec8649a0-9b6b-410b-b7de-68c6891e8099/final_fantasy_x_manual.pdfIn PDF document text
    • http://fukuselumetu.myartsonline.com/is_cfe_certification_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0b6ff02-37d2-43db-b801-a1932af7a7c1/how_to_prepare_for_a_building_inspection.pdfIn PDF document text
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_a1e2ebeae4c94c249fe92ac2410d8688.pdf?index=trueIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_05f3f741a7324eea98bfc4651c5bba0d.pdf?index=trueIn PDF document text
    • http://pigutun.myartsonline.com/fagezekasefuwanurev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c2fb61f-241b-4ea7-81c0-b6d4fda167c2/what_is_a_religious_science_practitioner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebc5945-4b98-44ab-a91f-0646c27f97d7/65574541433.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE45 5156 bytes
SHA-256: 45eeb01001983ae3bcdb59f6a3edf233e8ed741db8404b9b608c3295fb4adf82
font_01_sfnt_off0000ffc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC2 10828 bytes
SHA-256: 6a4d64b793f45846f61bead528c8dc522a92ebda0be7d08cb0ef123d16154a97
font_02_sfnt_off00012491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12491 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c