Malicious PDF — malware analysis report

Static analysis result for SHA-256 47939b561226287f…

MALICIOUS

PDF

89.6 KB Created: 2021-07-04 20:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3802275d0419898ad30d987de70ae38b SHA-1: 974f737253e4cdcd1a2ed35bbfaf4e93674a4ffa SHA-256: 47939b561226287fcc13a3a11a5aef2411762e5a6312c4ee6b746b5e7f4dea60
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised CMS uploads, indicating a link farm designed to redirect users. The PDF's structure and the presence of external links suggest it is used as a lure, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/e578fee0b7df8b7a52dc077f647b0883/tumekakaxu.pdf In PDF document text
    • http://ks4073.com/file_media/file_image/file/gipik.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9004cff0e---xalefuwarupunewesanurinov.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/jizokamidigilesaluw.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8e3cc8eac---kidivowifotedonor.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/324f2bb2eca72416ba53953ff5339d03/katixusunedeviturik.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/b3cc1ea8f90a45e3a704becce4c02c51/84544049671.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b14bcc9f39e---fuduxupu.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/c3953b526e698b7603c276bb43ed1b19/tebit.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978005ac15a---63221368500.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609913dc6d5d0---balunefuwegow.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/36683836853.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/notemufezobo.pdfIn PDF document text
    • https://paperland.bg/uploads/file/deladutejinupuw.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086ba753f7d3---12733566349.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98912fd96---76428741341.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c6046c71abf---588597456.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160988cfe0fc06---lilosexamezodalunewi.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/78fc4500017001a18797ed8c1169bd5f/nusisodolovetix.pdfIn PDF document text
    • http://webursitet.org/Files/file/dudapajapoliwupobonuj.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c856a2bee0---45218758708.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c45c2c84b8b---57366885909.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f67e90cb74---91547214376.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/69298443045.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=cheap+trick+gimme+some+truthPDF 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_off0000f91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91E 10892 bytes
SHA-256: 1ea1a36d165f22d19fe93e7966a06ef8eba3016a39fc55eb620d3f29e38eaa05
font_01_sfnt_off0001126e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126E 17328 bytes
SHA-256: 6db69785e69f2b83c5fd85d292f577d1541461c0045a942b4d62d246906f589c
font_02_sfnt_off00013f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1