Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca634dddc21e4973…

MALICIOUS

PDF

74.8 KB Created: 2022-04-15 06:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: a540989dbb9c428803a4f7822191d5a9 SHA-1: dd826eec32d05a2c060291c8af9a32ee2dae4028 SHA-256: ca634dddc21e49733a513acf2688a068382157c58a945d667f833a2ed911f5fc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://fecuq.co.za/YmrXLWy8?keyword=how%20to%20write%20a%20song%20about%20someone PDF link annotation
    • http://bezagsecurity.cz/userfiles/30256582186.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/xudizete-dozorejidago.pdfIn PDF document text
    • http://numberprotect.com/admin/kcfinder/upload/files/79148735712.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/38701937246.pdfIn PDF document text
    • http://4bx.pl/public/file/16083177877.pdfIn PDF document text
    • https://bilewemebit.weebly.com/uploads/1/3/5/9/135964156/701577.pdfIn PDF document text
    • https://tapoduxumusuna.weebly.com/uploads/1/3/4/7/134733142/renoxivevufegesurufe.pdfIn PDF document text
    • https://valuekare.com/ckfinder/userfiles/files/70903704136.pdfIn PDF document text
    • http://www.petercar0937494634.com/upload/img/files/pikonorogafopafezir.pdfIn PDF document text
    • http://abnicum.ru/files/files/15740835181.pdfIn PDF document text
    • https://artgallery.devctn.com/ckfinder/userfiles/files/wagugudibuna.pdfIn PDF document text
    • https://www.swaraagmusic.com/public/templateEditor/kcfinder/upload/files/kizobimuv.pdfIn PDF document text
    • http://fazekaskozpont.hu/images/upload/file/putuzejasusibikab.pdfIn PDF document text
    • http://opt-russtd.ru/data_center/upload_pictures/file/sawelunofafozijujobobu.pdfIn PDF document text
    • https://buzoraxuv.weebly.com/uploads/1/3/4/3/134366179/07d6a5f6c.pdfIn PDF document text
    • http://inhome360.ru/admin/ckfinder/userfiles/files/44665933237.pdfIn PDF document text
    • https://tigigefudufabu.weebly.com/uploads/1/4/1/3/141335798/tefirax.pdfIn PDF document text
    • https://searchlink.org/userfiles/file/40231042382.pdfIn PDF document text
    • https://jancsoalapitvany.hu/ckfinder/userfiles/files/mefanutunomuxeref.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_off0000c0b6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c0b6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B6 17236 bytes
SHA-256: 25657fc02c5d0c3758241e4de42ad9ce6f2401f3ad51491704e1f5c3b0bc4f79
font_01_sfnt_off0000ed06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED06 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001051d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051D 10724 bytes
SHA-256: ddca781f98b5bae5be19bfac117300eb48cb03c7baf6179f3921aac8b6dbb908