Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c9181a8d3ad410…

MALICIOUS

PDF

74.3 KB Created: 2022-03-30 23:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: e64b7483d4eb1290950a396f97e6bfb6 SHA-1: 19f3c89154f7f337d4fe6f4a9605a55745fa8ec6 SHA-256: 25c9181a8d3ad410b6124108bb0c522d91d3a8944636ea11e4e3d600eac812b8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

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://fakebomazeb.weebly.com/uploads/1/3/1/4/131453402/2718692.pdf In PDF document text
    • https://nurerimufiwovu.weebly.com/uploads/1/3/4/3/134394752/tofiderowatik.pdfIn PDF document text
    • http://waterlootour.com/FileData/ckfinder/files/20220223_15C61FF781772067.pdfIn PDF document text
    • https://kadamoxezegawuf.weebly.com/uploads/1/3/4/3/134347408/fomefuzud.pdfIn PDF document text
    • https://adpslunicko.cz/img/upload/files/pofem.pdfIn PDF document text
    • https://jaxebenub.weebly.com/uploads/1/3/4/2/134266064/lisezoza.pdfIn PDF document text
    • https://bursaphotofest.org/uploads/files/kawutinakagiropemi.pdfIn PDF document text
    • http://xhzhengli.com/upload/nuduvide.pdfIn PDF document text
    • https://kaminuzud.weebly.com/uploads/1/3/4/7/134705180/fupigivu_gudakeneb.pdfIn PDF document text
    • https://gigawixirebasig.weebly.com/uploads/1/3/1/8/131857482/4615484.pdfIn PDF document text
    • https://mirupativex.weebly.com/uploads/1/3/4/3/134368078/276819.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621729e045e6d---75177827733.pdfIn PDF document text
    • https://liwuluvawemekot.weebly.com/uploads/1/3/7/5/137509347/5cd6419533f.pdfIn PDF document text
    • https://jetisinodab.weebly.com/uploads/1/3/5/3/135335938/gidiv.pdfIn PDF document text
    • https://vesitunerenos.weebly.com/uploads/1/3/5/3/135338192/6e9e05010.pdfIn PDF document text
    • https://wubajepetodol.weebly.com/uploads/1/3/1/6/131606368/e7ba1c0.pdfIn PDF document text
    • https://zizowotedudoma.weebly.com/uploads/1/3/4/6/134641453/9874c.pdfIn PDF document text
    • https://lusizemanu.weebly.com/uploads/1/3/4/1/134108609/9470366.pdfIn PDF document text
    • https://juxepikipoz.weebly.com/uploads/1/3/4/4/134486641/juxigavugof-mupufujikelepor-kaxigigat.pdfIn PDF document text
    • https://pixerogamaba.weebly.com/uploads/1/3/1/8/131871590/niduxab_welinaruwukuni_rilubujoguwenof_nelipir.pdfIn PDF document text
    • https://paxolobiwoke.weebly.com/uploads/1/3/1/1/131163878/mutif.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/viredejufanevozi.pdfIn PDF document text
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/rarifotazes_wofomuxam.pdfIn PDF document text
    • http://kiszelyugyvediiroda.hu/docs/file/falexejapa.pdfIn PDF document text
    • https://benaputilog.weebly.com/uploads/1/3/4/7/134707665/3818823.pdfIn PDF document text
    • https://redodire.weebly.com/uploads/1/3/1/4/131408340/voramomelagaduvitita.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/7339916304.pdfIn PDF document text
    • https://fupixadig.weebly.com/uploads/1/3/4/0/134096542/retova_nibeza.pdfIn PDF document text
    • https://yubit.co.za/YmrXLWy8?keyword=do%20dachshund%20shed%20hairPDF link annotation
    • 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_off0000c350.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c350.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC350 10424 bytes
SHA-256: bcaa753a7c819c7d5f2eec74db270a2b0224ce79fc4be60823d689ae2f6893b8
font_01_sfnt_off0000dace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACE 16432 bytes
SHA-256: 131defb42a51807151f93c932c69a3d9d7361fe8f8da92a97ceb6bee79d6c3e8
font_02_sfnt_off00010556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336