Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7f443afa2a1ddd…

MALICIOUS

PDF

71.5 KB Created: 2021-09-27 05:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 10eed181cdf56fab56fbdee5c71999b2 SHA-1: 0b09f0d600467d796d36b1d519a863f75efb4a99 SHA-256: cd7f443afa2a1ddd59a0500096655ad3c623d031940a962c02d0f257c5359d0e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://www.forteks.com.br/admin/ckeditor/ckfinder/userfiles/Images/losafujusalibepi.pdf In PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/fapodubaduxoriton.pdfIn PDF document text
    • http://take114.kr/FileData/ckfinder/files/20210914_074E1AECAD8C9E25.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/jafum.pdfIn PDF document text
    • http://ahknchem.com/upload/files/72378052335.pdfIn PDF document text
    • https://rireenfrance.com/images/upload/files/8651119893.pdfIn PDF document text
    • http://www.sudeshnamaulik.com/fckimages/file/galirolezi.pdfIn PDF document text
    • http://rayer.cn/d/files/22389188877.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/9433583601.pdfIn PDF document text
    • http://www.cemeba.com/uploads/ckfinder/files/xawowowerupugawititi.pdfIn PDF document text
    • http://fornacedelia.it/userfiles/files/tomibejesivemanitinowa.pdfIn PDF document text
    • http://stlukesfp.org/ckfinder/userfiles/files/sarasiruge.pdfIn PDF document text
    • http://fillaracingacademy.cz/ckfinder/userfiles/files/labojuvekidokodevizaz.pdfIn PDF document text
    • http://smeeing.com/userfiles/files/ratonetitabor.pdfIn PDF document text
    • https://oreopay58.com/ckfinder/userfiles/files/legozunefok.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/visowolijepa.pdfIn PDF document text
    • http://boek.se/bilder_umeny/File/82684679800.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/vewufefuxa.pdfIn PDF document text
    • http://birkhoffhi.com/userfiles/files/gapefuzizosivexabapan.pdfIn PDF document text
    • http://fairbank-ia.org/admin/ckfinder/userfiles/files/noruburogedasorox.pdfIn PDF document text
    • http://xaydunglenguyen.vn/upload/files/aa9cdf.pdfIn PDF document text
    • http://lindendirect.com/tempimg/file/fewaga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=hacked+version+of+amazon+primePDF link annotation
    • 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_off0000b219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB219 17792 bytes
SHA-256: 44acfae56dc74e31785078cb46bdc1108bf0df5198d88f311a8e8628dca725e7
font_01_sfnt_off0000dfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BC 10848 bytes
SHA-256: d76e23dfab8f6c429b3642ba211e077fdd26603ac3042304231286a6c52d5a38

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