Malicious PDF — malware analysis report

Static analysis result for SHA-256 af26d1bc7645f1b8…

MALICIOUS

PDF

85.7 KB Created: 2021-10-05 01:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: f536ecd78fca2429087f741becf8da09 SHA-1: 3cf2b1bd6dbe953e31906224c13e76d89d84f687 SHA-256: af26d1bc7645f1b83f4573804c4c5812db258356b5aa44c071b6131d0175ebe7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 https://irlanc.ru/uplcv?utm_term=where+does+cellular+respiration+occur+in+plants PDF link annotation
    • http://balletpanov.com/uploads/files/8374107860.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/pidufep.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/55aab058ab962167a2452d56fe7d09c1/29775006591.pdfIn PDF document text
    • http://nkmate.com/FileData/ckfinder/files/20210902_520320FF0CFF26F4.pdfIn PDF document text
    • https://ayurmitra.com/files/file/tomegalosoda.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/53667748679.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/wusenefozo.pdfIn PDF document text
    • https://proxus.nl/file/94018696708.pdfIn PDF document text
    • http://retrievers.su/ckfinder/userfiles/files/jibuzilapakorixiku.pdfIn PDF document text
    • https://kebecelectrique.com/upload/editor/file/defemikemu.pdfIn PDF document text
    • http://ippon.lv/uploads/File/vovikivof.pdfIn PDF document text
    • http://pokwuttibut.com/file_media/file_image/file/52102666059.pdfIn PDF document text
    • http://indago-rovigo.it/userfiles/files/givimojusejapipubezaje.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/20383211048.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/pegizexixagifi.pdfIn PDF document text
    • http://lamekatus.com/uploads/ckeditor/files/jerivokelinamix.pdfIn PDF document text
    • https://tavio.ru/files/file/jemupuguzekakokejubapif.pdfIn PDF document text
    • https://nichecnk.leaddeehub.com/userfiles/files/61519748641.pdfIn PDF document text
    • https://www.zochrot.org/ckfinder/userfiles/files/netijopekujivosiwazivew.pdfIn PDF document text
    • http://year-c.com/upload_fck/file/2021-9-10/20210910192950767964.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/66236612189.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_off0000e714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE714 19136 bytes
SHA-256: f915fde529ffeb5ad05d40046845090f9aebb3a6661dcc18a4fd08e82fbc1878
font_01_sfnt_off00011885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11885 10704 bytes
SHA-256: dba90f0c402830778c98cb3cf8757d8c159482a84970eca9dcedd94c0c65035a
font_02_sfnt_off0001310c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1310C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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