Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d02fe9becd3444…

MALICIOUS

PDF

77.7 KB Created: 2021-07-30 21:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5dfc142d94982ef5887d8d44142ac65d SHA-1: a274f8c44c24f976020d022989b303ee1a8096dd SHA-256: 26d02fe9becd344450200d3c2163db64afa06a2e29f8420dac7115f5fc9fcd5b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites, including those hosted on disposable domains and potentially compromised WordPress installations. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://philabc.ru/uplcv?utm_term=sonic+generations+2d+apk+download PDF link annotation
    • http://simonkuehner.de/gfx/userfiles/files/doxuf.pdfIn PDF document text
    • http://kasaitogo.com/uploads/files/rozeve.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/kuwagudeduxogopikuruwemi.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4db7a4312---15263758184.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/g37jc0rd6cv3erbnm7u18asdkj/polipijimudas.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/8108b0b7eb125a4c890c0ddebf67852a/16191975791.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716cf61f13b---88821220978.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/20649460567.pdfIn PDF document text
    • http://geyikkimya.com/userfiles/upload/file/tisikevovibo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609682c80002c---61669069296.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/133d33cef39d104208710cc8dd50fad8/98551842899.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/vobuzifubazonudolenutez.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/ba467c5dfb68ec2dbc464daf26781a55/zixexalepudaf.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/41ef1642d369eac4014a0bb199185c12/zewuwaseluvow.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c590cfdb0a1---53597146276.pdfIn PDF document text
    • http://istrouma1971.com/clients/9/9b/9b88b062b8d6af44b28e209fcb06d7d5/File/vojufixumumezenutuliw.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c39d70311---wumudo.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/faxadasefuwiburaz.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ef8e5bf01---rilovesefopokofiv.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/3f63d001a10fa575e75a15519e681d47/buxivetoduv.pdfIn PDF document text
    • http://futuralagoparking.eu/userfiles/files/zatuperawipetiva.pdfIn PDF document text
    • http://phongkhamducphuc.net/images/files/nopeledubefuwibedibakefuz.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/71086378648.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/87412009901.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_off0000c5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D7 20108 bytes
SHA-256: ddb3c0ba454d7bafaf18e424ce994383fbca7c68adfbc7ba92621499e1ac2a77
font_01_sfnt_off0000f6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF7 11060 bytes
SHA-256: d6765147300b7281d042ed8a7ea5a5e84e8258bfe9f7683d89b60d4129a63b72

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