Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f07877861b753d…

MALICIOUS

PDF

46.5 KB Created: 2020-10-02 03:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-01
MD5: f68b23bafb3ca7116b9349876e2f3305 SHA-1: 0a8002bd1cda436bad570ec4a2866e776405bc07 SHA-256: a4f07877861b753d308366a03074e782e23de6074cc3c096da6393b3c8feeabf
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://gettraff.ru/strik?keyword=the+secret+life+of+bees+audiobook In PDF document text
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdfIn PDF document text
    • http://files.cen10seniors.com/uploads/1/3/0/8/130814057/692723.pdfIn PDF document text
    • http://files.neondreamsthebook.com/uploads/1/3/1/3/131380308/e55bb20a2304.pdfIn PDF document text
    • http://files.coloradoartclass.org/uploads/1/3/1/8/131871480/solutokipazit_tapunopatuxagan_texetof_guriv.pdfIn PDF document text
    • http://kupanipo.alphabetgardenjapan.com/uploads/1/3/0/7/130775889/buzuzuvifibokejitig.pdfIn PDF document text
    • http://xurivi.stmichaelsrichville.com/uploads/1/3/1/6/131637372/borumonifadupot-joguvozij.pdfIn PDF document text
    • http://tedajesek.demetriahillcannady.org/uploads/1/3/1/6/131636755/kowosajagimo-rijun-wopawedewano.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a12.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a12.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009ecf.bin)
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/48623122624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/49558216123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9614/0712/files/bully_game_apk_revdl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ff6c33-67e7-4769-92bd-7e8fbfba5943/5964029060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b3caf0-54f7-4293-8d12-9d5c5557a1e1/99391769874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce908206-2bde-430a-82f3-1209b283e3cb/50819204228.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 extracted file (font_00_sfnt_off00006a12.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A12 5040 bytes
SHA-256: 0c96d44be9a8a3779c6b15f9197f3b03a1f0bfbff7d7b56b18d9231263f4b8e8
font_01_sfnt_off00007b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3E 10400 bytes
SHA-256: 0cf47013b1b1638f1f8f4b4f1b0831ba2339b83ef307fe4d9f0a316dc774b74b
font_02_sfnt_off00009ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361