Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd793ba5d0dfb0ab…

MALICIOUS

PDF

83.1 KB Created: 2021-08-20 09:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 901484103ca40bbda97c0b0db1eb4583 SHA-1: 7a0b403c13a7f99dd9edfe4f710a9db2893959f0 SHA-256: cd793ba5d0dfb0ab4cf04ee0e5a3405c96b4ea6b65933150bb087833489483d0
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://crysiq.ru/uplcv?utm_term=stihl+ms180c+chainsaw+parts+manual PDF link annotation
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/32954668382.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5eeef0b14d---61179723053.pdfIn PDF document text
    • http://studioarchoggianiepartners.it/userfiles/files/reworerokamenusoraluzu.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b65d6cae1---26788568494.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/82399264649.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/63006210305.pdfIn PDF document text
    • https://ita.kru.ac.th/ckfinder/userfiles/files/juxazuwafixajipoxafidax.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/37569808632.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160b4d84ebc058---66642636229.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/200218401289.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/81697109237.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/0332d37f72904727414f1cd1c1d50a60/nigaxufaxavoke.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a0ff2c414---39248100531.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/27ee2e36d9c6d768a07a09fbfe6d93c4/kezonusubewe.pdfIn PDF document text
    • http://smwiarus.pl/ckfinder/userfiles/files/56272179695.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/ebbbf27b6d55def15c383770548db9e9/tesitizavekoma.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/saxabojepos.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/26853030054.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/f1b3af05b6607b2c2f4656eb5873427c/miziwitexakumorop.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/60798164258.pdfIn PDF document text
    • http://onmamtour.com/FileData/ckfinder/files/20210814_EBD709796920B66E.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a184fb5d6c1---12638726028.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/5cfe29acdb666ac027320e4a58ef62d2/8642935892.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_off0000dfe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FE 11028 bytes
SHA-256: bafdc39180c3b5962033ff7c2b756d32f81408c650f04784aa3d048aa95d3d1f
font_02_sfnt_off0001117e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117E 17224 bytes
SHA-256: 2327ae299ea011830e4e56dced984ee56d998750d1a711730657858ebc69de15