Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e31b13a4729dde4…

MALICIOUS

PDF

91.4 KB Created: 2021-08-12 11:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 7a97e01629ab3d2af0cd0f5078b75dbf SHA-1: 5e5b0d0546d56af595c191ea8ffb1ea51f7f47a6 SHA-256: 4e31b13a4729dde4fc9f355c0b9dea9aa0cc15024b709dca64586126aca5ad37
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://mariondhuique-mayer.com/data/file/keraxewelifimawisaz.pdf In PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16078080f1db00---digusolidisag.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/xopabibugutovubikopenur.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/49410208404.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f41ad1e35---bevune.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc9573de32---vesizof.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/9bd027aca4d915755fb2609a0daebf33/50905756023.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/b35e9d3f02e3471efe3778dea97c909d/78860948228.pdfIn PDF document text
    • https://beautydiction.com/ckfinder/userfiles/files/98782755979.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072ff861976a---45191685602.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a78d82d94---valujebupewujevitikazilu.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/dd190b7dbd3881b8e7921e3b04e63447/vinusetaluxike.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/tlekc76angbgp56vp53cngjhl5/62003877792.pdfIn PDF document text
    • http://miltonhigh65.com/clients/874455/File/98364830592.pdfIn PDF document text
    • http://abpaluso.com/upload/file/26929727443.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/levajebuxokesisib.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/9tcsu7n5be9snvddhg1hlp2b66/15051187643.pdfIn PDF document text
    • http://www.mostex.sk/files/articles/file/venapuresevujagadamuzanal.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/83974204764.pdfIn PDF document text
    • http://childhood-matters.com/clients/49507/File/5571427609.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/japutusibiwunazeb.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/sofewu.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa0b9f1a82---33347193428.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=conditionals+in+english+theory+pdfPDF 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_off00010293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10293 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAA 10924 bytes
SHA-256: f11f75dcd0905862145c6f3153a4fc95215f2432cdbe6db813ad152761e209fb
font_02_sfnt_off000133b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B9 16876 bytes
SHA-256: ca5f26926cbc959207d238318ab43d14a097e6e0d07539b2f3745bf407333d3e