Malicious PDF — malware analysis report

Static analysis result for SHA-256 726744b80de2e4a4…

MALICIOUS

PDF

96.6 KB Created: 2022-04-05 17:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-11
MD5: 4d285c412a1dc86bcfa1e55d1d02ccc0 SHA-1: dbf9087c0d3e8121db6f23be8227c3cb8fff957a SHA-256: 726744b80de2e4a4aaa42570632538fd35cfebe619958704176adad7c3f3fcff
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yubit.co.za/YmrXLWy8?keyword=collapse%20how%20societies%20choose%20to%20fail%20or%20succeed%20by%20jared%20diamond PDF link annotation
    • http://xn--9i1b14lzokxjcrti5um.com/upload/fckeditor/file/meninefinox.pdfIn PDF document text
    • https://kijagixizob.weebly.com/uploads/1/3/3/9/133997709/kulosiz_rodebawedakax.pdfIn PDF document text
    • https://vesilaxevi.weebly.com/uploads/1/3/4/7/134735958/7be48.pdfIn PDF document text
    • http://realestatespoznan.com/uploads/69169766610.pdfIn PDF document text
    • https://pemidala.weebly.com/uploads/1/3/4/6/134667230/9210786.pdfIn PDF document text
    • https://wagoburaf.weebly.com/uploads/1/3/4/5/134524365/vififixaduvegam.pdfIn PDF document text
    • https://luxury77.com/kcfinder/upload/files/pevapasorexekil.pdfIn PDF document text
    • https://fifiruzi.weebly.com/uploads/1/3/0/7/130775727/bomulapomovasi-fibexaf-gevuxusinefax.pdfIn PDF document text
    • https://kejedavozeve.weebly.com/uploads/1/3/1/4/131483662/2865535.pdfIn PDF document text
    • https://daxosunusopudom.weebly.com/uploads/1/3/4/5/134510034/wusiwokexukap-wuxobi-tagowirivadag.pdfIn PDF document text
    • https://negofugino.weebly.com/uploads/1/3/4/5/134529575/dijibudeseko.pdfIn PDF document text
    • https://burevojaziji.weebly.com/uploads/1/3/4/7/134729690/4089578.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16206d5342e2db---mevuzok.pdfIn PDF document text
    • https://fusodozot.weebly.com/uploads/1/3/4/0/134096428/3068617.pdfIn PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/verupuzu_bugaro.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 extracted file (font_00_sfnt_off00010b2b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00010b2b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2B 11484 bytes
SHA-256: fbf0f39acb5f731d6d1a14f3704aa6042f0e2ac30ba640206de9d3b059b92be4
font_01_sfnt_off00012600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12600 20708 bytes
SHA-256: bdb85e32081dab2446803530f64433d6b5dd4d420cf4becd24bbeba5313d68c6
font_02_sfnt_off00015a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1