Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af9990426792959…

MALICIOUS

PDF

74.8 KB Created: 2022-04-17 12:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: b5b1b705cc10dc2828cddcb1cf919cf1 SHA-1: f9e6570bf08d3f75b7060836bd8ce3e68af14a7b SHA-256: 4af99904267929592da7ca3d9677c5414541eab8681bde425bbac651365dd381
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lazav.co.za/YmrXLWy8?keyword=how%20to%20get%20in%20the%20boiler%20room%20re2 PDF link annotation
    • http://tantex.org/tantex/tantexuserfiles/file/25619632883.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16232f7996a1d2---duwowapafevuj.pdfIn PDF document text
    • http://websteravelandscaping.com/editorData/file/xavokumebipafofijubu.pdfIn PDF document text
    • https://eva.am/files/d9e2882f1b175b02.pdfIn PDF document text
    • http://divorceinhungary.hu/kcfinder/upload/files/xapojikibovofipodiver.pdfIn PDF document text
    • https://obo.olsztynek.pl/assets/includes/kcfinder/upload/files/3669658830.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/tilozulanasivew.pdfIn PDF document text
    • http://www.lovebliss.tw/UserFiles/files/nojujaxosig.pdfIn PDF document text
    • http://churchtextile.com/userfiles/file/dejow.pdfIn PDF document text
    • https://officialbacknumber.org/editor_up/xixexepowoxe.pdfIn PDF document text
    • https://bupofoturaze.weebly.com/uploads/1/4/1/4/141429232/napone-tasagipuputuja-wanetijuze-fupajagegugomu.pdfIn PDF document text
    • https://mysilo.com/upload/ckfinder/files/93039888789.pdfIn PDF document text
    • https://mukavotedi.weebly.com/uploads/1/3/1/8/131856112/7199928.pdfIn PDF document text
    • https://kawanmto.net/contents/files/jiwawizedawelawokolosoleb.pdfIn PDF document text
    • https://bloomeng.com/uploads/94145441987.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/60316421344.pdfIn PDF document text
    • http://dmkert.hu/files/file/mutetup.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2022-3-2/20220302164614775364.pdfIn PDF document text
    • https://pituzidadago.weebly.com/uploads/1/3/4/7/134722752/pepelikelusow.pdfIn PDF document text
    • https://zugowexilib.weebly.com/uploads/1/3/5/3/135349829/molalasagawuduwit.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_off0000c31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC31D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000db2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2F 16540 bytes
SHA-256: 6382c56a9d92ad7f4ad332f17b8865d2cb8e4863d2ddaf446b1e8f57bbef9033
font_02_sfnt_off0001061a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061A 10564 bytes
SHA-256: 72d3ab185275504672466d1d80b1ce17262a2b8751b9d553409ef3ab698193af

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