Malicious PDF — malware analysis report

Static analysis result for SHA-256 9847324f1c75a2a3…

MALICIOUS

PDF

69.9 KB Created: 2021-02-25 01:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b5e0f46efafc4fb4a6db84a0bd5fd13b SHA-1: 7fc80468020c3000350c99009adf01e437c4c731 SHA-256: 9847324f1c75a2a35749b3f7040147574701fedae81c9d63cf78a56e50a50820
186 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
  • 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://jacksth.ru/award?keyword=bostitch+roofing+nailer+manual PDF link annotation
    • http://gepexoliv.medianewsonline.com/tipo_de_gobierno_actual_en_venezuela.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/laferavudokanejuborotuj.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/9558010.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/15797386564.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/BwsEhfZ/tiptop_mantis_cover.pdfIn PDF document text
    • https://modotetizifoxi.weebly.com/uploads/1/3/1/6/131637555/momujubalegivi.pdfIn PDF document text
    • https://tilotifibow.weebly.com/uploads/1/3/4/5/134505855/4170301.pdfIn PDF document text
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/89481.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/8984e333ac.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/6371203.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/dsegija/origami_star_step_by_step_3d.pdfIn PDF document text
    • http://mivejuvididu.66ghz.com/76102213239.pdfIn PDF document text
    • https://gulesome.weebly.com/uploads/1/3/4/4/134496781/suvugamage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sojoramuf.epizy.com/13847323569.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/82818241538.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/18568347932.pdfIn PDF document text
    • http://jadevasaxa.epizy.com/ffxiv_desynthesis_leveling_guide.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/how_to_write_grants_for_nonprofit_organizations.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD339 5344 bytes
SHA-256: 48c3c3d36e10fc3175d814119eb999490d026eb13c84671318938f269de4bb80
font_01_sfnt_off0000e540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE540 10440 bytes
SHA-256: 01efb82a50e8105c578f97a88cc4423c452d3c78d3d6408f47cd6151c799e8c9

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