Malicious PDF — malware analysis report

Static analysis result for SHA-256 405a2b3c95afa217…

MALICIOUS

PDF

97.0 KB Created: 2021-07-03 02:15:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 331edcfa8f1c5388d344c6d63aef3877 SHA-1: 7823fa13125298236dac68f5b6a4b394ba78eb02 SHA-256: 405a2b3c95afa21703f6403223901633d1ef7fa7934e51ac39fa69d4e8ba2f96
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The document body is unreadable, but the heuristics and URL analysis reveal a link farm designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/e8njarv84krsv9234vrt76h6ml/movoj.pdf In PDF document text
    • http://libron.pl/fckupload/assets/file/ralekalo.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/6c0d60c1be63dc13c1350722bf842c73/48500634098.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ac797809b6e---39492417109.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/bd6bca7c935dee0ea634a41f17b6fefa/sotiwax.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/qmsgecl9bpskqa49icnoqpriat/simamavurivok.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/05738fa0e3b2f7119bf721d5a2227364/63104415527.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba4a04a843---45117782057.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/ludaxisafivububib.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/kijel.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/xopeka.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/57051081815.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0ac918685---23679634572.pdfIn PDF document text
    • http://parentini.it/userfiles/files/78399205987.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/cf8cfe90fb72d9886062a8a775e0502f/fedepuwel.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/75111786436.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/f48ee8e6143fbde57dc4b4ab28cf5aef/7328284765.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/9551071958.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2c64b52a9---wefadamefojudapuzu.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec34e6af6a---gegugevasozile.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16071b40bb2083---fexiwefidaxawukoxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=outlaw+rogue+shadowlands+rotationPDF 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_off0001171e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171E 17280 bytes
SHA-256: 16209303f96e32bf1b89d852032d7a4fa0096f0d670cec6922bc1199524ccf09
font_01_sfnt_off00014458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14458 10736 bytes
SHA-256: 59b5eabef7884ff5b063b24f256b47d3d93be3130fc384e93139e92635475b20
font_02_sfnt_off00015cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.