Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bca71f47e26bb65…

MALICIOUS

PDF

73.3 KB Created: 2022-07-13 02:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.4) First seen: 2026-05-20
MD5: f4bd1311822100f671e9f4befa1edd08 SHA-1: b9d628be9632f4add947fd424d4559717eb5b62a SHA-256: 3bca71f47e26bb651bc982aae601c5281deaf13ae9e35a1088c099265c5ce33a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/lajew.pdf In PDF document text
    • https://tanubalaxusan.weebly.com/uploads/1/4/2/0/142042019/kalabetegofir-xelegaju.pdfIn PDF document text
    • https://sisajubiji.weebly.com/uploads/1/3/0/9/130969075/vujasozuvujimaz.pdfIn PDF document text
    • https://bapelozujofura.weebly.com/uploads/1/4/1/3/141341899/8131345.pdfIn PDF document text
    • https://sajakuvidosub.weebly.com/uploads/1/3/4/4/134496924/b5f5e3ce4bee54.pdfIn PDF document text
    • https://sojetupeduxagi.weebly.com/uploads/1/3/1/8/131856567/zoxamaxebisimetex.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/23754213434.pdfIn PDF document text
    • https://loligimagiv.weebly.com/uploads/1/4/2/3/142356415/lerelinuta-wesiwaf-rapub.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1626910aa2152b---pefexojizi.pdfIn PDF document text
    • http://keitbg.com/images/files/nuzofafaxijafanejuwenab.pdfIn PDF document text
    • https://horgaszvelem.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/kerezudimofijaxotebivas.pdfIn PDF document text
    • https://defosojuregoko.weebly.com/uploads/1/3/1/3/131383900/a99b9e1.pdfIn PDF document text
    • https://sulogifobib.weebly.com/uploads/1/3/5/3/135322722/811a962606c7fce.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/62017236679.pdfIn PDF document text
    • https://woxexawunum.weebly.com/uploads/1/3/0/7/130776255/zewagalufizusi_wubex_robivonate.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/162286d1a5a03b---14894279712.pdfIn PDF document text
    • https://bikawinudom.weebly.com/uploads/1/3/4/5/134595305/delubadofixon_vuparibujunuwam_kejokinavu.pdfIn PDF document text
    • https://givunanisu.weebly.com/uploads/1/3/4/8/134848628/8732889.pdfIn PDF document text
    • https://pekeweluxema.weebly.com/uploads/1/3/5/3/135304067/lawewumexajipetajosu.pdfIn PDF document text
    • http://foaptoa.com/wb3?utm_term=ducane%20furnace%20cmpe100u4%20manual%20instructions%20download%20pdf%20softwarePDF link annotation
    • http://www.bitstream.comIn extracted file (font_00_sfnt_off0000d0a4.bin)
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A4 16548 bytes
SHA-256: 4388e540bbfb8429ce73ea62e942017d7a18193ffe9c3e4907e5871bd2277ffd
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 10308 bytes
SHA-256: 6cdf53a180bc5d72b8ab752125549836b85f53d71b6131806f63e83c12ed0417

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