Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d7d7a344d61f4a…

MALICIOUS

PDF

68.6 KB Created: 2021-10-09 15:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 332228bfa9e2245105df393b322f1d7b SHA-1: 8f2c34973198c6db2e33d2d110de21e18a906116 SHA-256: c5d7d7a344d61f4a6215db4ec9f631992330cdfe131781c3603352d44c5c4026
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crewmak.ru/uplcv?utm_term=use+of+this+pointer+in+c%2B%2B PDF link annotation
    • http://wellgroup.cz/UserFiles/File/49132522907.pdfIn PDF document text
    • https://12shio1.com/contents/files/27116922562.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/091359312917.pdfIn PDF document text
    • http://abnigakgdsg.friendship-match.com/upload/files/derofuritufuvemapakon.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/lazomusokenas.pdfIn PDF document text
    • http://kenshopvn.com/uploads/files/dubosoluxeru.pdfIn PDF document text
    • http://seattleteriyaki3.com/uploads/files/zewodorilamixag.pdfIn PDF document text
    • http://netmode.net/app/webroot/uploads/files/konenoxojemijopopegejoto.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/24841975537.pdfIn PDF document text
    • http://kowel.com/ckfinder/userfiles/files/1631439918.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/15343770241.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/tagikunagosa.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/40392184223.pdfIn PDF document text
    • https://bodykneadstherapy.com.au/ckfinder/userfiles/files/wuburisuzaj.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/0747575bb5e3a7b24faa49b4e7c1f9ed/bakeri.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/a01b27a9d9447bbe2a3f054264af53b9/55315404483.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139c7041b59d---bobexaguxulidopapanuwu.pdfIn PDF document text
    • http://finalbrand.cz/upload/file/3291738042.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/33278470805.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/68072c9f8a6c3edee3cf3e739866be66/2280177446.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/a2828fe98ea146bd7d8d7755133240c1/39426641216.pdfIn PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/pimabadenurexamek.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/mabamolurizo.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_off0000b218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB218 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2A 14272 bytes
SHA-256: fd7c4131442714ec4fe7f918e7cff21c2c54f7a4435958ddbc3578da1ceb1cc7
font_02_sfnt_off0000ed6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6A 10376 bytes
SHA-256: 141890c0fa493bbeffd905d29fbfac22dcfcdcdf4078b5c26cd0707de954c1f5