Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e951d5264cca17f…

MALICIOUS

PDF

110.1 KB Created: 2021-06-26 14:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 72ce37d564dc9e12a820f32c31b6cfb2 SHA-1: c18ee7a262d18b6dcd953479afddec1b17a5f362 SHA-256: 0e951d5264cca17f2f57f0f21036f20c9444ef72b65fd28a67130b0a3618dea4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body was unreadable, but the heuristic firings and URL analysis are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9639

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://ketchas.ru/uplcv?utm_term=rpg+maker+vx+ace+characters PDF link annotation
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/9sb0m0k9fujdjgcqr65pv46ond/bijasefiguz.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608c502d17992---pofave.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/b794afb15ad4a0901d5693e800b6af2e/wunenuwozis.pdfIn PDF document text
    • https://maspacientes.es/wp-content/plugins/super-forms/uploads/php/files/43rn464kl5e80ddf6tl85d2no4/gatuv.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/67179219523.pdfIn PDF document text
    • http://toanlinh.vn/upload/files/46532527059.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e12e01bf1---degebiwotipupar.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/7citjmp85c03b7dv2fusn01reo/mefibujiv.pdfIn PDF document text
    • http://harryreichert.de/uploaded_pics/News/file/32862018770.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/1badcd85c31b86917939a98fca1a1aa9/niluwubekoratajapekazafos.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/ule6vhnlp2qo8r50pub9jtd97m/62620747136.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3507b1100---wegudatigatekegebifixit.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/zasumiwaxibemu.pdfIn PDF document text
    • https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/662d7650bbaecbe9db390e38ba79824c/jupotebumapituvunazisu.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/72aaa3f7bd837e57fb545598ab5f4483/40190058638.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/977a6f114ff9dd50ba548e6b17335902/51165568335.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/16072f90794b12---55176545991.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3ada4901a---43976279670.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/jsh361mt2qvndr3bnsr1rp1j73/26064901822.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/30991514257.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/14177462852.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c83cd3e6bdd8e948f4f4c1fc1a347716/femuvedizo.pdfIn PDF document text
    • http://kfbi.ru/content/file/21324990948.pdfIn PDF document text
    • http://americanpetrochemicals.com/customers/CMS-IMAGES/file/sitib.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/19491651393.pdfIn PDF document text
    • https://x-software.cz/data/file/kivojudezigumadu.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/dc88ba36c4c14c555855a080003931bb/35344817658.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A6 10764 bytes
SHA-256: 979ed8f4bee203d7f86369b63a8039c344a29991dbac5bc55ab6ce5452646449
font_01_sfnt_off00013180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13180 15232 bytes
SHA-256: d74c6ca0274dcea4be34037b0780f62554d57ce73ed96c16c3c17ad2fa00bf9b
font_02_sfnt_off0001618f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1618F 18448 bytes
SHA-256: c4ea2229cfc72355bb1060c0971b080be1d8c028da65ca183f5f54f95bbc06a1
font_03_sfnt_off0001924e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1924E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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