Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dee16c402d4d77…

MALICIOUS

PDF

73.3 KB Created: 2021-09-01 10:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: f3748bf1b2787b852974c64286ad4ea1 SHA-1: 5f60719e201d3ffd371df2c3b4a40ed4de58ae3b SHA-256: c5dee16c402d4d7722eaef3063607d8451e6e713323b774c50ea86464094f089
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://geredekombiservisi.com/userfiles/file/29488970702.pdf In PDF document text
    • http://shiraz.sk/ckfinder/userfiles/files/gisezi.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f88e12f74---purexiragaxalijevuwemiki.pdfIn PDF document text
    • http://jerilyndavisrobison.com/clients/870655/File/55391453388.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/bajogofovub.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/976055936.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/dudezonatoguluvuwodak.pdfIn PDF document text
    • https://tiemhoahaibara.com/data/dulieu/files/kipujofewoxazufid.pdfIn PDF document text
    • https://rajatotogroup1.com/contents//files/71015285014.pdfIn PDF document text
    • http://austral-immo.com/userfiles/files/45991307200.pdfIn PDF document text
    • http://wxeina.com/userfiles/files/49753997284.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/a7b57941007a94b0dececae2fae6f9de/nofuket.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/idrg7qd6bk068b8s3nl33snbet/75252066132.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b07d148bb5---59734394926.pdfIn PDF document text
    • http://www.badischer-kunstverein.de/ckfinder/userfiles/files/jekaje.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c593fe016d3---vafolodevijonojofodasigut.pdfIn PDF document text
    • http://www.nachtruhe.info/up/files/gutawetozo.pdfIn PDF document text
    • http://tourhong.com/FileData/ckfinder/files/20210725_4839C50EA949A348.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160840d9e29887---volewila.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/widobiri.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/f42136b26822b2c0b169656e997e159f/nupenadavu.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/161031bf350b48---35044633698.pdfIn PDF document text
    • https://terryhaas.com/wp-content/plugins/super-forms/uploads/php/files/29346616441655bcb65f5fc409692eba/rejevizibaxipokukad.pdfIn PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/lenadukotilatuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=assessment+of+learning+1+chapter+1+pdfPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082608e16f3c---dajavufiwuvix.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_off0000bda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA0 15588 bytes
SHA-256: 3bf76abd71ef1b5a6e42cbc153c125cae3d6fc056e6ebf110559379d9c6da024
font_01_sfnt_off0000e54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD61 11100 bytes
SHA-256: 58ee174a66bcaf8c2ded5deb699517c36821c4b8491ae499beef2d3b249d25bc