Malicious PDF — malware analysis report

Static analysis result for SHA-256 69075da534c4985b…

MALICIOUS

PDF

84.0 KB Created: 2021-08-15 13:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8613f20ea6ce6053747d592c1b3883a2 SHA-1: 1e40942ae68eedfe68a3b8b4eef8b37f5ba0bd1e SHA-256: 69075da534c4985b3aca8d9622357299f8c295e19c629b45d5d440cd92efd06f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains a link farm pointing to multiple compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The presence of numerous links on disposable hosting and the use of UTM parameters indicate an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/5f1f4b5f07109a64667134ede1c9c776/2907507026.pdf In PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d58053524f3---vuzedixewavedojanexafar.pdfIn PDF document text
    • http://greenld.com/userfiles/mezudazanelegigixujed.pdfIn PDF document text
    • http://johncarroll1967.com/clients/1/18/1896e795ecc2602204d707ec4e69586f/File/zexekig.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/3acd3f8e54d2c18f4598fd2a981ccdb3/tubekajakuritixobusi.pdfIn PDF document text
    • https://cdmsig1.com/ckfinder/userfiles/files/torogekukowazowularopep.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b9245d102---nesajazeto.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/99554617498.pdfIn PDF document text
    • http://savaksangida.com/resimler/files/99902718184.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/vonid.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/20382091344.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16074507bb0de7---lotisuzukumif.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/jatudalovirovij.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/zeniboweragatowuma.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16072e3cf8fc38---75039586816.pdfIn PDF document text
    • http://kaies.net/upfiles/210727034604744103cyyr6o.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8645ae079e---90911514142.pdfIn PDF document text
    • http://rajeshjshahani.com/clients/d/de/defaee86e9f1fedea086b53a5072ac2c/File/55637639401.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/l2u0ccnukca0sfabumsgktd434/41344872425.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607acb1c71324---22344205358.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/papapizunag.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/158614405d82247c34ac76fa57d69054/19392746528.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/drh3a45oehga4dpc8c8kk7g086/47805759179.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/8ecd1ce193f8e5b656453e76c52ad1a7/83828765096.pdfIn PDF document text
    • http://xnucleus.com/members//member_images/files/ludinabibaxexomopisu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=ejemplos+de+aplicacion+de+la+integral+definida+en+la+vida+cotidianaPDF 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_off0000de63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE63 11144 bytes
SHA-256: 0b926975b8f23ec7eee1319cfe0d3015b594c005703e332fe24ca898642028f9
font_01_sfnt_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001103e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103E 18160 bytes
SHA-256: ea4c9a75792aa5a50c03cdc1533c5e06365653f790c806c2633d805800fbcdf4