Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f66c8156c842ab1…

MALICIOUS

PDF

154.4 KB Created: 2022-03-18 11:12:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 201cb29143a6931d423f00a989d70926 SHA-1: 708c7ea1ab48379104e2ae452ca4c050abd83468 SHA-256: 8f66c8156c842ab15ab151aa7b1aba8100936612e32ebb58e43e59cbd10b036f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8575

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://sportsbettingconsultants.net/cote_dor_import/admin/ckfinder/userfiles/files/xibejolosepivapuf.pdf In PDF document text
    • https://g4m3s-4p1-12s1.com/contents/files/97027457364.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1621f157471130---40469505349.pdfIn PDF document text
    • https://vnycc.com/userfiles/file/litirefewozamexu.pdfIn PDF document text
    • http://canoeing.by/pics/files/65174876940.pdfIn PDF document text
    • http://shortguycentral.com/ck_uploads/files/nifofe.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/162202bb9c2529---toberovojesidazakupidewi.pdfIn PDF document text
    • https://jcmimoveis.com/userfiles/file/baworalamifozogalodaki.pdfIn PDF document text
    • http://test.currentaffairsfunda.com/assets/kcfinder/upload/files/taguno.pdfIn PDF document text
    • http://proclima-membranes.ru/userfiles/file/wimariwatiza.pdfIn PDF document text
    • http://www.77ice.com/upload/files/47913776512.pdfIn PDF document text
    • https://www.utn.ac.cr/sites/default/files/files/16012640283.pdfIn PDF document text
    • http://studiotecnicodama.it/userfiles/files/41505016135.pdfIn PDF document text
    • http://furasskutat.hu/admin/kcfinder/upload/files/tadatodo.pdfIn PDF document text
    • https://webkapper.nl/ckfinder/userfiles/files/mabevuvobo.pdfIn PDF document text
    • https://rapn.ru/ckfinder/userfiles/files/tozasiseku.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/45262703353.pdfIn PDF document text
    • http://rimaoman.com/admin/userfiles/file/kiwawojabelovo.pdfIn PDF document text
    • http://macro-e.com/app/webroot/userfiles/files/83945288335.pdfIn PDF document text
    • http://corpinal.com/kcfinder/upload/files/gejusatekorejesezubiruda.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/161fd043840bfc---32261163711.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/glumg1fs5t030qnrd5ba6mo5f5/39687642959.pdfIn PDF document text
    • http://integrotech.pl/zdjecia/file/22441080642.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/14406291736.pdfIn PDF document text
    • http://www.tributosantafesinos.com.ar/admin/kcfinder/upload/files/sulare.pdfIn PDF document text
    • http://povprojekt.cz/upload/files/subasenonubonirezodavik.pdfIn PDF document text
    • http://apatity.verlauf-ekb.ru/admin/ckfinder/userfiles/files/94309053527.pdfIn PDF document text
    • https://pgp-puh.hr/fck_media/file/63396011041.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=vadama+bakra+chare+song+freePDF 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_off00020406.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00020406.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20406 15676 bytes
SHA-256: bc009aae05bcad30b9bee7fa0092bebf1a3a5efa76d0c400165fdab369747a25
font_01_sfnt_off00022c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C34 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00024354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24354 10888 bytes
SHA-256: a75992e5917422e70050635350bb1519799f380f713509669218cf40face36cb