Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b8cf782742577b…

MALICIOUS

PDF

79.2 KB Created: 2022-04-05 22:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: c107ac69a1b4325e1d392f169732d35d SHA-1: 1b3423abb06bcc3796e281ce22abc33020b92afc SHA-256: a8b8cf782742577b70988c0a3e5996f11c24e756dcd631b2cece2d7d7a96155c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://wirut.co.za/YmrXLWy8?keyword=plot%20diagram%20pdf%20readwritethink PDF link annotation
    • https://zosolino.weebly.com/uploads/1/3/4/6/134676828/3767847.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/axutavuboworopo.pdfIn PDF document text
    • https://jesokalatozu.weebly.com/uploads/1/3/4/5/134591365/01ed5.pdfIn PDF document text
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/feguxof.pdfIn PDF document text
    • https://www.oceaniacroisieres.com/html/scripts/ckeditor/kcfinder/upload/files/danifiborirenukiwiwuj.pdfIn PDF document text
    • http://specialcats.nl/media/files/xotisuluzusonipufuxigek.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/neneniwexudaxomad.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/leramabukulera.pdfIn PDF document text
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/digemusibodagige.pdfIn PDF document text
    • https://ozanetiket.com/TasarimAcarnet/serhali/upload/files/najopazedazed.pdfIn PDF document text
    • https://www.swiftcargo.com/adminlogin/kcfinder/upload/files/63068254973.pdfIn PDF document text
    • https://bomaripuxizidul.weebly.com/uploads/1/3/4/9/134901287/demivizejezuvu.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/zulutoxulumagalibemowudu.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/beafa09f286267805cfdea68a356305f/puwofepibisog.pdfIn PDF document text
    • https://menusopam.weebly.com/uploads/1/3/4/5/134597334/veragulajuma-ragijibujikux-wijapunaguvase-punizegozopid.pdfIn PDF document text
    • https://sofupingame.com/calisma2/files/uploads/zasijafopitapozo.pdfIn PDF document text
    • https://zajoralesame.weebly.com/uploads/1/3/0/9/130969459/tajexiti_merezo_didaxazaj.pdfIn PDF document text
    • https://vadewowiruku.weebly.com/uploads/1/3/1/3/131382700/dapalelure-lapixatow-gukulabuju.pdfIn PDF document text
    • https://jejaparax.weebly.com/uploads/1/3/5/3/135332208/bozig.pdfIn PDF document text
    • https://pupizotewijuguw.weebly.com/uploads/1/3/0/7/130775862/jaxupegokawejo.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_off0000d417.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d417.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD417 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2E 10956 bytes
SHA-256: 526d50de818455aad9c73f091f330b89c14027aecfd98eabcf803ce5b8b74b32
font_02_sfnt_off00010536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10536 16320 bytes
SHA-256: ae10843a4f67ebbb0fbe7c3f60e5c2aa9b119e5d0e8d87bc0b759a63d88b9371

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