Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef2960d95141b9a…

MALICIOUS

PDF

72.2 KB Created: 2021-06-10 05:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0fc992b070a51018fd29259dc0f76d93 SHA-1: 520dc39ee71ce8d42df06fdb53eed0b8c55bf277 SHA-256: bef2960d95141b9a60e3323b689a57b8736f6e055f86d083d42442b72ff9ae37
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link farm designed to redirect users to various URLs, some of which are hosted on compromised WordPress sites. The presence of a 'live football tv for android' UTM parameter suggests a phishing or scam lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8726

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://infrive.ru/uplcv?utm_term=live+football+tv+for+android PDF link annotation
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/dglpjgit0n1g66u7o2h56k8t7n/70669209452.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/73553873871.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/789918893.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/ea8b580c618362d2164a0935293291d1/39897336651.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/tmtm6upmmejnbln4u8unj6hf25/maliguzomexasegujanem.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/ne8e7bkqq2i89af91rk3g9ujs8/58245112427.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/7608f974ff31ff4db1875ae22d8258a3/97378946668.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/d31e16b15593798469f2fc3ddc8535fd/86784784332.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/08eacabd093bfcbf15061882677349dd/81327337622.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/11485590509.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16071052d7f47b---ralisuxigidesagozozewew.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c11266c0df7---53116348328.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8bdfbcd66---pizizinifujepu.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/6a4uhq2escvks1dqeb43dv4po2/zolazigudovuse.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc2b73003a---buwikolinazap.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/manomibowovamoluvine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 4864 bytes
SHA-256: a6c14f71cbbe5a0488e08223e3d6f16e4c18e0421927297ae1ec936697798d87
font_01_sfnt_off00010322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10322 10844 bytes
SHA-256: 344ad9d5dccd9654db89bd77e081cc61bd74e980a6cb9f71ace61a4427446bb5

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