Malicious PDF — malware analysis report

Static analysis result for SHA-256 f693e0e05b251b78…

MALICIOUS

PDF

219.3 KB Created: 2021-07-21 18:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aba0b95147eda081c883a1ac8b98fe80 SHA-1: c5b824769c0294202a2c71425af97f11c766f19d SHA-256: f693e0e05b251b7822f6d792e22161dbb1eae5fb777059597f3782764e28b563
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress upload storage, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, potentially leading to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9841

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.
  • 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://ledins.lv/cms/file/82954908885.pdf
    • http://manajrgvaaradhi.com/cms-uploads/files/34268981415.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a04be798a49---pevevabugobenefajuziz.pdf
    • http://eurekaloggers1970.com/clients/a/a4/a4917853023b9a70bc4506ca58f09c65/File/puxufoxufawarasaxugokipu.pdf
    • http://dzbnf.com/upload/file///gibizek.pdf
    • https://bandotrading.com/uploads/file/96135848026.pdf
    • http://www.alborada.es/ckfinder/userfiles/files/79566144507.pdf
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/97boj2ab9hen3jr1bch0784qu8/vodadakulede.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160983d37e1558---jowugos.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16094348ddd378---kogujemixon.pdf
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/19d87d6bd10266168f8ac6df4d54bd66/51841314223.pdf
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/juarrt6c6eivsgdnatete55h4k/96257524542.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f7ef71c009b---56206608128.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/f33l21qga0ip6vcl6d25gnfdp7/gaxefinuxav.pdf
    • http://blbr365.com/userfiles/file/1621497191.pdf
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/xukimopiwowejukux.pdf
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092c0cd50ce9---dotixusofubazelerotujapa.pdf
    • http://hrjok.com/uploadfile/file/74248263783.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c705da954---fuluxad.pdf
    • http://sungsam.net/userData/board/file/49221008667.pdf
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/36af933346892a628abef775b0ced07e/34129504923.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/992b72e257ae9deb82eb8bd285744f5b/67335272797.pdf
    • https://datatech-int.com/userfiles/file/39690360516.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=navy+customs+and+courtesies
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002fd2e.bin
b3950222369a05ffbc1af88a2253bf08aa5b87b70bdb94fe4d8393743a5237d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD2E 10740 bytes
font_01_sfnt_off000315ee.bin
4ab2e90e6f318a06beb8603ae23d2f1e0dd636e7ce2b468a5ca54d2b1320f03f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x315EE 18368 bytes
font_02_sfnt_off000346ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x346CE 16792 bytes

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