Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2fc537cb0d7e56…

MALICIOUS

PDF

81.5 KB Created: 2021-10-14 14:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: c324917dba03317e5f757d674a5eecdb SHA-1: 38f12bc63b7d4c1a6ff41d35b0e6f80944568d41 SHA-256: af2fc537cb0d7e568abe32fe5857a385fd5a342359358a0212889da4578500b4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://ongnuocdenhat.com/upload/files/62521828181.pdf In PDF document text
    • http://goref.ru/files/file/nemowolimutuzofo.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/xawiwerem.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/83212046943.pdfIn PDF document text
    • http://attep.com/home/sandbox/domains/heekee.com.hk/public_html/ckfinder/userfiles/files/gunadokiveweregufasu.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/6030886516.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/gugigegovutafezovi.pdfIn PDF document text
    • http://zajazd-broadway.pl/galeria/file/pomokunogib.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e3a6d5d1f---27702166650.pdfIn PDF document text
    • http://kingkady.com/uploadfile/files/82059101060.pdfIn PDF document text
    • http://forglass.sk/userfiles/file/nifomopezod.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210910182443.pdfIn PDF document text
    • https://mobilpetrol.olajpark.hu/files/files/lijukenabeminoj.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/46310835417.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac86ca75e7---61209101229.pdfIn PDF document text
    • https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/32539245865.pdfIn PDF document text
    • http://arucax.am/user_images/file/nitonesozaterejipup.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/85288843875.pdfIn PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/gidasusesoxusonadifole.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16149644ba6a51---remugumigeru.pdfIn PDF document text
    • http://calisnt.com/uploads/files/56983931373.pdfIn PDF document text
    • http://svatba-emi.com/uploads/pages/files/sadexapexekigog.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/4f11df31952b5310723ecbf420e3ebc5/dubapuwam.pdfIn PDF document text
    • https://kp-bs.ru/upload/files/74854153876.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BGAemAmcdTc/uplcv?utm_term=simple+subject+and+compound+predicate+examples+with+answersPDF 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_off0000d7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 11412 bytes
SHA-256: df57244d34fe6d3bfdaf2a13eb190d4763f6e849b6ed3d644b1b5e1292649208
font_01_sfnt_off0000f282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF282 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 17756 bytes
SHA-256: 3bb2a18aa1b07d5ea79219b835240851297eb156eb53b566fbe57b4a277281eb