Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bf40f92c9d0103…

MALICIOUS

PDF

70.2 KB Created: 2022-05-23 12:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 88870d9812e807fcb4ddbba6ff344b30 SHA-1: 55b7b58647afbb7d9ce2db18ff01d20647d45016 SHA-256: 88bf40f92c9d01038b0ddbc73270a848414533709d9f45f7f9a8370ba35389ea
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cafij.co.za/YmrXLWy8?keyword=la%20jaula%20de%20la%20melancolia%20pdf%20%20full PDF link annotation
    • https://gotivewa.weebly.com/uploads/1/3/1/0/131070711/zoxabulaxozeg.pdfIn PDF document text
    • https://sotemukolewidiv.weebly.com/uploads/1/3/4/6/134660154/c6f4285.pdfIn PDF document text
    • http://pokrowce-ochronne.pl/Upload/file/nagufumovenewaweb.pdfIn PDF document text
    • https://poetnazrul.com/kcfinder/upload/files/75712434582.pdfIn PDF document text
    • https://finonofegikagaf.weebly.com/uploads/1/3/4/0/134041572/kadudurevafin-bibepovosupisaj.pdfIn PDF document text
    • https://saftehnika.com/upload/files/vedovuz.pdfIn PDF document text
    • https://xn--nmqu14inmf.com/upload/files/kisokotapomisunidegeked.pdfIn PDF document text
    • https://wugusuza.weebly.com/uploads/1/3/4/1/134131733/nodamexun.pdfIn PDF document text
    • https://lewelekokoje.weebly.com/uploads/1/3/4/3/134333059/fbc8918340b7d6.pdfIn PDF document text
    • https://gijesilikisuzid.weebly.com/uploads/1/3/2/6/132683000/lapawojajibeg.pdfIn PDF document text
    • http://gardensyellowcab.com/admin/images/file/lisigukoror.pdfIn PDF document text
    • https://jevixivuxed.weebly.com/uploads/1/3/4/6/134622771/gasel.pdfIn PDF document text
    • https://kejevupaju.weebly.com/uploads/1/3/0/8/130814576/motodubugakore_mitupu.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/54293597219.pdfIn PDF document text
    • http://zhongkerb.com/userfiles/file/90457476867.pdfIn PDF document text
    • http://surveycook.com/upload/tmp/202203/file/97243542855.pdfIn PDF document text
    • https://nazemetov.weebly.com/uploads/1/3/3/9/133997276/dobexiralitufub-maketofovev-xutar-xexolutasafi.pdfIn PDF document text
    • https://zetetolaz.weebly.com/uploads/1/3/7/5/137518759/9758338.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/53679222661.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 extracted file (font_00_sfnt_off0000aad7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000aad7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD7 10604 bytes
SHA-256: 894bf5f7dda9cde49ebd5cb826efbc919cbcca500eac655c29529915f4ac4eaa
font_01_sfnt_off0000c2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFC 17880 bytes
SHA-256: 2aa476741c172941b74da141afff728c4d4dede00fe1321efaed26a18927feb0