Malicious PDF — malware analysis report

Static analysis result for SHA-256 425a55bdc991a21e…

MALICIOUS

PDF

86.9 KB Created: 2021-08-16 08:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 546869bc7bde09ac04f0f6f4712610f4 SHA-1: 4dbb31857a411df020beaa8ad9b065c22bf5312f SHA-256: 425a55bdc991a21e74e7b1deb260378b2df18c83f6d459f6c707bead478ea474
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 http://aahsclassof1978.com/clients/b/b6/b6117739535924054831d33ecd54b00a/File/wobapinetulevofuzet.pdf In PDF document text
    • http://ferrogep99.hu/static/media/file/21229589209.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba1d7b076b---wegabumu.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/17154218536.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/tatol.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a883da4f62d---12635585841.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/73595f532e2a8399b69c1e0da33d0d81/ligekoz.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/424nnfnmhpm4ukqdr3fqfpfhe3/90225767013.pdfIn PDF document text
    • http://quaint-house.com/noxisotuzumozovikuwufidex.pdfIn PDF document text
    • http://schubert-hh.de/image/file/sewuxamegapuvasaxuguxa.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076535081a48---15980761561.pdfIn PDF document text
    • https://rumputhijau.com/contents//files/rikezunowugodepatiri.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/fk2vtea7p13b323ctfbdudr02b/54396402079.pdfIn PDF document text
    • http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/18866101462.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/38304865221.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd042f388df---10266157686.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/medipukojusejetiwamobe.pdfIn PDF document text
    • https://folklorebridge.eu/uploads/pictures/files/58967916533.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b9a50ab92---55052988671.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/d029e4212ee453d1b24f20250a1c8b3a/kagotalagafu.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16283232452957.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/vemebadabafatewazagenite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=hamraaz+app+download+latest+version+6.5PDF 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 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_off0000ed8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8B 17304 bytes
SHA-256: a014f064c595922aa3af92eee0295b754ec2df5c1bc5370c1337ec6e1c3dbbb8
font_01_sfnt_off00011a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9C 11124 bytes
SHA-256: 7419dbcc4c1b9c093eead2a5ff7b6def008ab58e8aa1bc2fe86f55c6a5736169
font_02_sfnt_off0001349c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1349C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1