Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6fd8ac2571a592…

MALICIOUS

PDF

76.0 KB Created: 2022-04-20 12:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-06
MD5: 83ec5218063b1a32906c10987f7d71d0 SHA-1: 9bb264c6a71a44e6d232f1f922f5d9891f83615f SHA-256: 6c6fd8ac2571a59284cf022cf09552581202210d9e5bd72dfa80f402a6f219a6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://101balkon.ru/upload/files/notopur.pdf In PDF document text
    • https://daxedinojadu.weebly.com/uploads/1/3/4/5/134590150/wenej.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/qdi1jgj5cs2jckf770g91b72cs/kamelijojino.pdfIn PDF document text
    • https://lesura.net/userfiles/file/56384559297.pdfIn PDF document text
    • https://fme.ba/kcfinder/files/63743219816.pdfIn PDF document text
    • https://xigobelez.weebly.com/uploads/1/3/1/6/131606473/sipubotupebuze.pdfIn PDF document text
    • https://tikekukitalil.weebly.com/uploads/1/3/2/7/132712015/xojane-vaduk-folalefusukid-mixunikifiwiwis.pdfIn PDF document text
    • http://reklamavysocina.cz/UserFiles/File/wijuk.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/89614800680.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16247cdc36e15f---29587673815.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/sefikabepasevupojolopu.pdfIn PDF document text
    • https://xofajusas.weebly.com/uploads/1/3/1/0/131069744/xinefurotopos.pdfIn PDF document text
    • http://bargam.portalservices.it/public/userfiles/file/11190714608.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/natupesojorajelera.pdfIn PDF document text
    • https://exhibitproplus.net/mentorfinancial/page_images/file/76932490481.pdfIn PDF document text
    • https://vutujevofi.weebly.com/uploads/1/3/5/9/135971838/zigakilet_xabifo.pdfIn PDF document text
    • http://y-mirai.biz/js/kcfinder/upload/files/32991983816.pdfIn PDF document text
    • https://fecuq.co.za/YmrXLWy8?keyword=why%20is%20audacity%20so%20hard%20to%20usePDF 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_off0000c596.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c596.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC596 10524 bytes
SHA-256: b9878343ae714f51e63c8baf54cf1eb62e0b0bcff7e2ef93568735039f6d6f26
font_01_sfnt_off0000ddc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D4 17068 bytes
SHA-256: dc5ed1eae87eac079f9e31918d57d564f5089173cbb453aa7b02ba0fa661eff5