Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8a9bc5cb94dc7f…

MALICIOUS

PDF

78.6 KB Created: 2022-04-24 19:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 91300a7b3cbc5d2a08e80d6607b09a34 SHA-1: 3e588ad11afda33c06cd08c89c1d52694f90907f SHA-256: cb8a9bc5cb94dc7f6be593b4df08ce6b0502bbd9eabec737f2ea1ed975adabda
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://cafij.co.za/YmrXLWy8?keyword=cosco%20scenera%20next%20rear%20facing PDF link annotation
    • https://dumopodowejuna.weebly.com/uploads/1/3/4/5/134591879/zivoli-jujexab-fozepuwa.pdfIn PDF document text
    • http://gediklimakinahidrolik.com/resimler/files/6079194866.pdfIn PDF document text
    • https://bevufifebuseve.weebly.com/uploads/1/3/1/8/131855995/tosixisas.pdfIn PDF document text
    • http://nbteks.com/resimler/files/vuxela.pdfIn PDF document text
    • http://goldendoodlesofthesierranevadas.com/userfiles/file/bizuleget.pdfIn PDF document text
    • http://zoo-foto.cz/userfiles/file/baxuzawimajalof.pdfIn PDF document text
    • http://biopole-clermont.com/uploads/gestion_contenu/files/42377801452.pdfIn PDF document text
    • http://denetimmusavirlik.com/userfiles/file/74134563726.pdfIn PDF document text
    • http://oldadmin.k12cart.com/media/files/xedamesawinerokinon.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/bopuje.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/nufepof.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/12669773774.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/3796809054.pdfIn PDF document text
    • https://kagukemo.weebly.com/uploads/1/3/4/8/134884413/ropikiga-jomubijome.pdfIn PDF document text
    • http://cerrutistudio.eu/userfiles/files/fapolepubumitatubax.pdfIn PDF document text
    • https://gizipuvi.weebly.com/uploads/1/3/4/3/134312628/7536719.pdfIn PDF document text
    • https://dulichsamson.co/admin/webroot/upload/image/files/36974948704.pdfIn PDF document text
    • https://pawirijox.weebly.com/uploads/1/3/4/7/134701745/741d2.pdfIn PDF document text
    • http://www.ags-sib.ru/ckfinder/userfiles/files/kinujasamixizuvekijadu.pdfIn PDF document text
    • https://xemavuvewo.weebly.com/uploads/1/3/5/3/135394060/ad095848caa.pdfIn PDF document text
    • https://clubledomaine.com/assets/kcfinder/upload/files/82838660543.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/39684158842.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_off0000cc2c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cc2c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2C 10596 bytes
SHA-256: 0df7ffa5118e9868d7e31aa85cd83bd5a447e6c46f374526de9bce2a31942a95
font_01_sfnt_off0000e496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE496 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA8 17368 bytes
SHA-256: ae1815ef284fb1ff6109ba76088df199f27f777475b20bbb853860f8d5d84cbe