Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bb0753cdb361db…

MALICIOUS

PDF

78.4 KB Created: 2021-10-15 00:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: c4bdd7338b7c20b2f9d811798740bae7 SHA-1: d63820c019e5575a77825d1bb206f11d659c0d16 SHA-256: 72bb0753cdb361db94098541b59a8ae9c893de8ad6c7544e1755f24a3b3fff5a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://motoquadro.de/userfiles/file/direjowapozelugusu.pdf In PDF document text
    • http://xn--krmer-dnnebacke-1kb72b.de/files/file/57727759472.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/161632c7f354e9---52257746410.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/govosesuwutinavozor.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/vofaboxotefozojub.pdfIn PDF document text
    • http://www.cpiequipos.com/assets/images/user_files/files/5532796854.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16168a0be870d6---xewowuxiji.pdfIn PDF document text
    • http://dallard.fr/ressource/site-image/files/60103368073.pdfIn PDF document text
    • http://futimisdev.com/userfiles/file/2217818240.pdfIn PDF document text
    • http://ahknchem.com/upload/files/juxewotadokugop.pdfIn PDF document text
    • http://archbot.pl/files/file/giwativuzebanotaremasil.pdfIn PDF document text
    • http://klgd.spokoino.ru/i/upload/files/ginojig.pdfIn PDF document text
    • https://millvalley.com/wysiwygfiles/file/56048390274.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/qen8fcbsne921g1ql2ealn1j3s/39227180802.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/35389831742.pdfIn PDF document text
    • http://contua.org/userfiles/file/fegek.pdfIn PDF document text
    • http://makinsushi.com/uploads/files/62473042213.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/7xhmvLXWVJc/uplcv?utm_term=shahs+of+sunset+agesPDF 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_off0000cf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF61 17664 bytes
SHA-256: 31d7b35b7896e4d34a9402149f9dd0cc4546228caf72ee0e8cc35b39b05f2be9
font_01_sfnt_off0000fd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD10 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11527 10428 bytes
SHA-256: 5afe400384c538eb31cd8e7a0862563d4651d4f843ecac09f4211882ec65cfc7

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