Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf6129354dd3233…

MALICIOUS

PDF

70.5 KB Created: 2021-09-19 15:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8d044a58a7148f01c4c5007df87c7e3a SHA-1: d6442cf2f49007c3cc952eed879c891794c9f878 SHA-256: baf6129354dd32338769a2f8e0e46146a5984d2f47dc4d36b1e690ae4eae1a88
164 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 an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites acting as link farms. The primary URL, 'https://pixomot.ru/uplcv?utm_term=hitman+2+game+free+download+for+android', suggests a lure for game downloads, which is a common phishing tactic. The embedded JavaScript likely facilitates the redirection to these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=hitman+2+game+free+download+for+android PDF link annotation
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/6eeb44ada3626825d0d7c6c1ea2981bf/37036165113.pdfIn PDF document text
    • http://camara.acessoainformacao.org/uploads/ckfinder/files/28459122199.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137fbd8284ef---82468193978.pdfIn PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/69512730284.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/bagimepesafemi.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/kisorosavivorewu.pdfIn PDF document text
    • http://www.themixchange.com/userfiles/files/73472425817.pdfIn PDF document text
    • https://magnanelli.com/userfiles/file/90646171355.pdfIn PDF document text
    • http://mhzsolutionz.com/userfiles/file/zifoxasikinisomono.pdfIn PDF document text
    • https://novitas.ro/files/jogepenekez.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/rezorebu.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135f20ee9e03---78022857522.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613abb0d946a8---regozera.pdfIn PDF document text
    • http://all-vehicle.net/js/upload/files/49397690057.pdfIn PDF document text
    • https://emailing-online.fr/uploads/userfiles/file/kewufesotaveboxeg.pdfIn PDF document text
    • http://syarmarka.ru/userfiles/files/89470811943.pdfIn PDF document text
    • https://uleshuzatabc.hu/files/file/81484624049.pdfIn PDF document text
    • http://newworldss.com/uploads/file/kalewep.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/76728721697.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/lixepumetikareg.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/161415fda40b0d---77389411434.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/detexu.pdfIn PDF document text
    • http://arisutour.com/ckupload/files/7923276180.pdfIn PDF document text
    • 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_off0000b62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB62E 10724 bytes
SHA-256: fad744a30ad72d262bcecf57859c22a05c48cbbbe684249d2e6363f960543b09
font_01_sfnt_off0000ce97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE97 14936 bytes
SHA-256: 9429682fcf24548af5afb24164b40fd2606e20d287b3359d9034b58556303cfc
font_02_sfnt_off0000f442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF442 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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