Malicious PDF — malware analysis report

Static analysis result for SHA-256 44566b6cc11fe5af…

MALICIOUS

PDF

80.1 KB Created: 2021-01-17 05:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 1305f520ce9c92ce25ca57d5f6021701 SHA-1: a4203dc4de244ee1c905c6ca957a5ea4facf2272 SHA-256: 44566b6cc11fe5afa226bf6afc14824c5999bc1fa96217a47ef0b5ccd663e5eb
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://traffine.ru/123?utm_term=quixotic+sentence+meaning In PDF document text
    • https://nasupatuvijel.weebly.com/uploads/1/3/4/6/134610874/xodugosewizopuki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476274/normal_5fc564fba7a10.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/jO1FOgg/67840283078.pdfIn PDF document text
    • https://womawojixamukof.weebly.com/uploads/1/3/0/7/130740010/75771.pdfIn PDF document text
    • https://bixarina.weebly.com/uploads/1/3/1/0/131069915/33f31dc6a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fbc260143f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462678/normal_5fdc3694a7499.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/dwWgge6/91107978712.pdfIn PDF document text
    • https://bugigubagide.weebly.com/uploads/1/3/4/5/134586777/vojadavudevigiw-segudozame-jufukavur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388413/normal_5f9777a2e2e91.pdfIn PDF document text
    • https://zedumolubu.weebly.com/uploads/1/3/4/8/134862080/jipoligixomivaka.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://s3.amazonaws.com/lusegokaves/bluetooth_adapter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/billboard_200_songs.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_off0000ec3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3B 5000 bytes
SHA-256: 170adb6bbb9c207183ba7606ff4fab198602d29c4baddbbd1badebb477fa55ae
font_01_sfnt_off0000fd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2E 11528 bytes
SHA-256: 5e2c35afc233d77760db9b39877efece312966ba0d6ba5c8e874c103f94146fa
font_02_sfnt_off00012455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12455 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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