Malicious PDF — malware analysis report

Static analysis result for SHA-256 d079d6324f17c0ff…

MALICIOUS

PDF

76.5 KB Created: 2022-04-23 20:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-07
MD5: add620e7bc9fd22c0dc847148a8dd751 SHA-1: f41d3d0b13b6237145691eae52dabb9753ed6c17 SHA-256: d079d6324f17c0ff79d2cdd7febb1d367347a287b2bff3ed732dc39299347200
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous external URLs that point to other PDF files, likely to manipulate search engine results or distribute further malicious content. The presence of a large number of distinct, often disposable, domains hosting these linked PDFs suggests a coordinated effort to obscure the true malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://lazav.co.za/YmrXLWy8?keyword=when%20a%20woman%20doesn PDF link annotation
    • https://michalheger.cz/soubory/files/nukobomavafajamadiju.pdfIn PDF document text
    • https://rabunuzo.weebly.com/uploads/1/3/4/5/134502988/1635307.pdfIn PDF document text
    • https://agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/jazemosigi.pdfIn PDF document text
    • https://vubilidupetox.weebly.com/uploads/1/3/0/9/130970012/874235819d.pdfIn PDF document text
    • http://triomil.cz/kcfinder/upload/files/jipudagoribunekaresok.pdfIn PDF document text
    • https://netiwixavono.weebly.com/uploads/1/3/4/3/134306625/redovofefigo-jokivugex-vomogigomux-nedusawado.pdfIn PDF document text
    • https://sovurides.weebly.com/uploads/1/3/5/3/135349611/pimibalu-tedeseramape-wesura.pdfIn PDF document text
    • http://freeski.hu/freeski/file/16595246954.pdfIn PDF document text
    • https://takesefitetipal.weebly.com/uploads/1/3/2/6/132682925/2bf58dd.pdfIn PDF document text
    • http://www.niceresidence.net/image/upload/File/batugivawiniketiwaj.pdfIn PDF document text
    • https://spitalmoldovanoua.ro/ckfinder/userfiles/files/60174446479.pdfIn PDF document text
    • https://www.oceaniacroisieres.com/html/scripts/ckeditor/kcfinder/upload/files/taxuvenomerebivi.pdfIn PDF document text
    • http://www.vycvikprvnipomoci.cz/upload/files/rogikufimevepojobopotigop.pdfIn PDF document text
    • https://loyalangkorapartment.com/userfiles/file/letikotowezewekuzolagijub.pdfIn PDF document text
    • https://temadugebunexi.weebly.com/uploads/1/3/1/8/131871621/2555670.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/21958636613.pdfIn PDF document text
    • http://ombs.ru/uploads/files/2738974590.pdfIn PDF document text
    • https://absoger.bmv-communication.fr/uploads/files/30279855512.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/30kk041d56kdhgr591tckbfcd4/diledufifiwejamogive.pdfIn PDF document text
    • https://xubupatulebo.weebly.com/uploads/1/3/4/7/134701573/visinupijaxi-gajozurupanezu-kolojiwafalirin.pdfIn PDF document text
    • https://wadomojare.weebly.com/uploads/1/3/4/4/134472746/d2657.pdfIn PDF document text
    • https://xusofudubivo.weebly.com/uploads/1/3/0/7/130775679/2568c70da851.pdfIn PDF document text
    • https://gerudupox.weebly.com/uploads/1/3/2/7/132712596/5150551.pdfIn PDF document text
    • https://waderiraxobo.weebly.com/uploads/1/3/4/5/134505054/takumejiviru.pdfIn PDF document text
    • https://xiloxolej.weebly.com/uploads/1/4/1/5/141512357/jixowurid.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_off0000c755.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c755.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC755 16852 bytes
SHA-256: 0bef828f1b86d484389c9f9a05b3f540dce88b3a43cc143ca20bda1353da77f1
font_01_sfnt_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF2 10792 bytes
SHA-256: fa701d67c9853362f33f2a93f23a9553f12d105b10836e605235fdb96a0d14d0