Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73fff54a675e430…

MALICIOUS

PDF

77.9 KB Created: 2021-07-02 07:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d85c1927e8ba24b0e402f5d1a34ec953 SHA-1: 73c932388752f7e7a090db193b0205f2b4545da0 SHA-256: e73fff54a675e430b8075206953f8291fa6e50999cbd11ac81f93631e5d3bfdb
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to host malicious content. The document's structure and embedded URLs indicate a phishing or malware distribution lure, likely intended to trick users into visiting a compromised site. No scripts were extracted, but the overall pattern suggests a malicious document designed to lead users to a dangerous location.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fab6a8b7ee---1208236512.pdf In PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be22de20d18---konavuvorinak.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/60106400207.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a68952ba6d4---75578053470.pdfIn PDF document text
    • http://premsaktidal.in/userfiles/file/49963687428.pdfIn PDF document text
    • http://brightwayconsultancyservices.com/userfiles/file/66327265649.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/fatibekiwowezamumevomilex.pdfIn PDF document text
    • http://whs1963.com/clients/7/75/758a827d59fb1c2827eec60421ffdc22/File/28831451617.pdfIn PDF document text
    • http://xaydungphongphu.com/uploads/files/lilojononij.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/sopemurik.pdfIn PDF document text
    • https://afayl.com/userfiles/file/453077593.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/0e8432571e21fdb0d41545e4082af2b2/masezaxirunaxafi.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6edf23ea2d---84924095187.pdfIn PDF document text
    • https://nusamulticentralestari.com/Uploads/userfiles/files/zipeganute.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/ee22da88ae44c81c9ea5c7f7deba3781/55311311604.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/8fef723a5d9e3f9abcbff7738d763853/pomefibenasexenozovogom.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e1b41797c---84467411192.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/4617402783.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a4661516c---rusogudopetaxo.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/28068966326.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=ancient+and+modern+britons+vol+1PDF 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_off0000cd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE574 16468 bytes
SHA-256: 57b168d030f563bfd3000314ef60ebfaeb305d341ef5b901460b0bdaa2288e78
font_02_sfnt_off00011024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11024 10772 bytes
SHA-256: 6aa4c4475cb3234c5f55e2b4984a09097340c07ea9a753732b031b2b7906096e

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