Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99b80a51325846a…

MALICIOUS

PDF

93.7 KB Created: 2021-08-07 09:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 12af4924f897140717b5ee0f70d9e09e SHA-1: 39245f50edd3de7a6857d3c849d2a9547b410120 SHA-256: f99b80a51325846ad785d21ee7a8c6d7050e868b4bf1b23940846e28965838ff
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://allytemp.ru/uplcv?utm_term=resum%C3%A9+d%27oeuvre+litteraire+pdf PDF link annotation
    • http://davcpundri.com/css/file/66234332362.pdfIn PDF document text
    • http://lemfhafamilylove.com/clients/a/ae/ae548a02e38cf20d1222216853584fb4/File/56957907987.pdfIn PDF document text
    • http://learnazia.com/fck/imagesfile/zaxaxurukekip.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/nezorufapudimovarupibit.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/kevijumebemijefedutafuxe.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/ueiaqt0q62n9r96geuoodtmtt0/mepufumigij.pdfIn PDF document text
    • https://argentinaproduct.com/ckfinder/userfiles/files/69626027143.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610df82da062e---68123372280.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/88530990693.pdfIn PDF document text
    • https://akamercedes.com/images/uploads/files/73778561987.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d8b078832---74368008583.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/49118968330.pdfIn PDF document text
    • http://hengtongrongshang.com/jingkelun/userfiles/files/20210701165808.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160e5c2eb3e30b---fopajakujipudevomixufe.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a4fa20154---jusiba.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents//files/67054721284.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/rovagimolivab.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/0cfqfd1b2s4eqgaot2se0rclqc/dogetogirazogowalala.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16086b0b3b6116---fizatimitapisasof.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e56d63c7713---65765289452.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/3280073373.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/webetokenufakubififim.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/pdsbsbua8lspo32t3n6fdp1jpj/11672894519.pdfIn PDF document text
    • https://brs.jo/userfiles/files/lixudemulonapopenivesufi.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/it7tjnvrha24smfro1lsfrlh6a/58489326081.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_off00010378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10378 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8F 10952 bytes
SHA-256: 1f33b1709edce960047bde21b46c818c96a8784739206eb98a69dd7e9984e7c6
font_02_sfnt_off000134b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134B8 19968 bytes
SHA-256: 4c64f8194028b76b8639fc8da7bcbc11679c1b9fc6fd0039210220d6239ff7f5