Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd3d3c13ddb682e…

MALICIOUS

PDF

71.9 KB Created: 2021-11-25 16:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 09e94228277dce3d6953581e031f4c24 SHA-1: a0f0a7158be3e7a887350b6eff36577d716f4bba SHA-256: 3dd3d3c13ddb682e314400ceaaef66cac4c6c81abdf2a781eaba32c2498404fa
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://krisoc.ru/uplcv?utm_term=resident+evil+revelations+cheat+engi PDF link annotation
    • https://slavyansk.biz/userfiles/file/zegesugudojosogajep.pdfIn PDF document text
    • http://oiacreation.be/userfiles/file/24910342380.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-10-20/20211020021749359629.pdfIn PDF document text
    • http://musik-fachberatung-neumarkt.de/images/uploadedimages/file/19405668568.pdfIn PDF document text
    • https://tenhucchi.com/upload/files/19318295036.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/161394c3fe20ce---mizudagubelokalugavufo.pdfIn PDF document text
    • http://worldtile.net/jangheung/userfiles/file/36746775999.pdfIn PDF document text
    • http://chamdure.com/DATA/files/rewagotowulufokipovofozi.pdfIn PDF document text
    • https://ichibaninfotech.com/ckfinder/userfiles/files/sunem.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16145895258761---17668952211.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/genixigawufulagigo.pdfIn PDF document text
    • https://wittnebel.dk/file/vusosom.pdfIn PDF document text
    • http://kaymccarthy.com/immagini/file/zofanagunaligopo.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/bezagu.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/37097363984.pdfIn PDF document text
    • https://hab.erdenet.mn/userfiles/files/rimunewefowusivikuno.pdfIn PDF document text
    • https://aletihad-group.com/userfiles/files/xegupatigimokox.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/zidojojoselokapuxugag.pdfIn PDF document text
    • http://tainghe.vn/userfiles/file/kizuropifuk.pdfIn PDF document text
    • https://dukeofmarshall.com/ckfinder/userfiles/files/59635353008.pdfIn PDF document text
    • http://sk4education.com/ckfinder/userfiles/files/tezibijubilozutasowiji.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/6bef2066a022fe7e25556c229a8d7f01/kurixisom.pdfIn PDF document text
    • http://pro.ovh.net/~tribuene/images/banque/file/32443038387.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000c874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC874 10760 bytes
SHA-256: d51a1e69a5e5105aa7e4b22d3a9f29a300e788d5e0f82ab2af89acb55a515e9e
font_02_sfnt_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 18980 bytes
SHA-256: 7a2e52d7e0ec7d08afc7047373225d1c7d427515fb6cd4d69eafdbe742ff96d2