Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b1487036bd51e4…

MALICIOUS

PDF

78.0 KB Created: 2022-04-05 13:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 5fd17b0cbbdce19e9e257d142d5de96f SHA-1: a63a503cc6066b2c1acbed04b8ae152fa72b06ff SHA-256: 72b1487036bd51e449456953db09caa975879fde1a713ef00dd5725be6262ea7
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=what%20is%20the%20temperature%20in%20the%20coniferous%20forest PDF link annotation
    • https://www.italianamaterassi.it/admin/kcfinder/upload/files/69802081251.pdfIn PDF document text
    • https://oalysa.cz/ckfinder/userfiles/files/32379383007.pdfIn PDF document text
    • http://ideal-site.ru/userfiles/file/69673806049.pdfIn PDF document text
    • https://www.yamanosake.com/js/kcfinder/upload/files/pidupokobik.pdfIn PDF document text
    • https://nelerifo.weebly.com/uploads/1/3/4/0/134097450/7739884.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/nasiw.pdfIn PDF document text
    • http://ebiddex.com/kcfinder/upload/files/ronivonovagoludagodus.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/84305450361.pdfIn PDF document text
    • https://ramowofotaro.weebly.com/uploads/1/3/1/6/131607053/7230418.pdfIn PDF document text
    • https://aspirecambodia-edu.org/userfiles/file/nepogumifu.pdfIn PDF document text
    • https://lefitujeledezov.weebly.com/uploads/1/3/6/0/136028835/datupumajozewe_gudobiluda.pdfIn PDF document text
    • http://www.sictombbi.fr/ckfinder/userfiles/files/21723931578.pdfIn PDF document text
    • https://dozosiwogaw.weebly.com/uploads/1/3/3/9/133989014/fasokazotunole.pdfIn PDF document text
    • https://kamionosnyelvlecke.hu/userfiles/file/tubujukiwukovetowalar.pdfIn PDF document text
    • https://slavyansk.biz/userfiles/file/zidepanevariwi.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1621fad12551f6---63169968281.pdfIn PDF document text
    • http://idevoz.rs/files/wogixazitasifik.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/162195e6a6d457---vemuzezinutijawaru.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_off0000cd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD70 10792 bytes
SHA-256: e21baa3c5e07815029f44485a0472fea78e21d2a30fb9d6e709f7e4fc4d44bf3
font_01_sfnt_off0000e625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE625 16908 bytes
SHA-256: a294f359501ea6cf5a6afc7307acddfe7588395c5232d52951e0fe384ba955ac
font_02_sfnt_off0001123a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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