Malicious PDF — malware analysis report

Static analysis result for SHA-256 4256315a86d63742…

MALICIOUS

PDF

77.0 KB Created: 2022-03-24 11:16:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 13a730546d8e1336d9b0b111b494c6df SHA-1: d79429eb999ef83182329acb2a791342079a110f SHA-256: 4256315a86d637423b3df17d3e1f9515ab89ad956540dca96fc7afb920e87398
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://sunuf.co.za/YmrXLWy8?keyword=list%20of%20synonyms%20and%20antonyms%20for%20the%20word%20intrepid PDF link annotation
    • https://sufewusog.weebly.com/uploads/1/3/4/6/134644796/6876127.pdfIn PDF document text
    • https://jasiximipiz.weebly.com/uploads/1/3/1/4/131453573/eb880f52d.pdfIn PDF document text
    • https://sawifotu.weebly.com/uploads/1/3/4/5/134597463/c612ee9.pdfIn PDF document text
    • https://wifaborasumekig.weebly.com/uploads/1/3/2/6/132695644/0e34c587bc3.pdfIn PDF document text
    • https://jedujubopo.weebly.com/uploads/1/3/4/5/134521244/xigaperapewali.pdfIn PDF document text
    • https://bidegibi.weebly.com/uploads/1/3/4/4/134476665/pafawukulowaji_robevufidejof_lasawegululonu.pdfIn PDF document text
    • https://joworuzofoluj.weebly.com/uploads/1/3/2/6/132683209/nekedez.pdfIn PDF document text
    • https://jufazikifu.weebly.com/uploads/1/3/4/3/134316902/3e50b0.pdfIn PDF document text
    • https://nonewogigej.weebly.com/uploads/1/3/2/6/132681399/buxasigew-teropuxinepoj-ximasuwa.pdfIn PDF document text
    • https://xefezovunir.weebly.com/uploads/1/3/4/6/134623549/1335448.pdfIn PDF document text
    • https://garijonomiwobe.weebly.com/uploads/1/3/4/7/134711127/gobumitubunusakuletu.pdfIn PDF document text
    • https://fomiradoxep.weebly.com/uploads/1/3/4/5/134512134/gasulej_webibe.pdfIn PDF document text
    • https://jesomufufasak.weebly.com/uploads/1/3/1/8/131872286/talabefo.pdfIn PDF document text
    • https://kajurizekevebok.weebly.com/uploads/1/3/4/5/134586758/zuxufe.pdfIn PDF document text
    • https://losazutuliwuja.weebly.com/uploads/1/3/4/6/134622760/wavesades.pdfIn PDF document text
    • https://debivozujorebol.weebly.com/uploads/1/3/0/8/130813616/zoxaporivunukab.pdfIn PDF document text
    • https://jevogebog.weebly.com/uploads/1/3/2/3/132303093/32ec3325d9e.pdfIn PDF document text
    • https://wofinomedek.weebly.com/uploads/1/3/4/1/134108675/9d074.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/nusupuvopukorapaw.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://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_off0000c824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC824 16924 bytes
SHA-256: 24d1712c210a35e9188e17d6fcb729aa14fb5aa5fa2f7e4e293770934db8b7d2
font_01_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 10876 bytes
SHA-256: ce803f8547efff999a2a8e6b6d2223af26f0cc03c566a03f70d159eb555fc342
font_02_sfnt_off00010d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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