Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2b9e974ed87d14…

MALICIOUS

PDF

65.8 KB Created: 2020-10-24 08:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 42c6cdc06484da25c06fbfa5f286e55f SHA-1: 68225938730e6922b56929df986437e47b7b982a SHA-256: af2b9e974ed87d1487229fa675dbbae95034a98370e9b6d883a71abe65f6a363
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/wb?keyword=hp%20elitedesk%20800%20g1%20bios%20manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f87cd7b97e96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5f8e327532d3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8d02977b5ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_5f8dd1e733d33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f87633f53597.pdfIn PDF document text
    • https://niresofet.weebly.com/uploads/1/3/2/6/132682193/7976036.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/bisujipedujiledepu.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/zolisevegumadop.pdfIn PDF document text
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/7fd30cd0e2fffcf.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/4952957.pdfIn PDF document text
    • https://malinozibide.weebly.com/uploads/1/3/4/3/134380659/e93f0f2.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/cb09d5daf12.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4f1bd8-4654-4ad2-8eda-825c722eaa0c/45334579604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c768683-d7b8-4df2-9bca-4e9105433a84/radowokuvadowunevepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9843/0377/files/lumikifurowemuxezijul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9151/6310/files/xabuxatapuzurixit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6010/0765/files/invisible_man_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5565/0230/files/lubuxivabozekirugopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/68048060827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873fe68e-6b42-42f5-9900-8d7767602ec1/fobaxiforabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f837e9-6502-4074-8b4b-c70447987391/55011970831.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C6 5736 bytes
SHA-256: 691bd44406114c1c3392e057634970950cd8ce560db694d65e9da2c87238b03e
font_01_sfnt_off0000bd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3A 11128 bytes
SHA-256: ce39e8e3490acf59642f06a0c88a8ee6c08b5d49a6520237963fedff8c66bb60
font_02_sfnt_off0000e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 16348 bytes
SHA-256: 44344d777475bc27302cf71c6ce9e96b5edcb3cf6b8673c7cacff1863add0d01

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