Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ff45b71a29e81d…

MALICIOUS

PDF

80.2 KB Created: 2021-09-05 09:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 219558a9726de53dcd9f537f2befc19d SHA-1: c51f7f0b1d9c634e9d5780c61339b4bc7a07b84d SHA-256: 29ff45b71a29e81dfe831e852b8a79e735e2677b61b29ca9289418c3e2f1296e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised WordPress sites. The embedded URLs suggest an attempt to redirect users to potentially malicious content or phishing pages, aligning with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • 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
  • 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://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/00f6bf8e731ae2096fabb388bc8111d0/92312178844.pdf In PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/9944bb4e4f354f7f3fef2412de0b010c/xatovagowepelil.pdfIn PDF document text
    • https://autopsrus.com/ckfinder/userfiles/files/50998831873.pdfIn PDF document text
    • https://xanbiente.de/userfiles/file/80059111600.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/66347149609.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/zudafasadodezapibumaluru.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/bosekulogedejeva.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/ffd498ed28002846fa8a7b39f6c610d2/pamajirefefitejiw.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/91969862106.pdfIn PDF document text
    • http://www.parinet.fi/tiedostot/files/dezasiwewi.pdfIn PDF document text
    • https://turasmobilya.com/img/editor/image/file/lepazerilavakipu.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/2a7f3b06e112e145d06513e8af85a2e6/vaxesovidif.pdfIn PDF document text
    • https://investincarpathians.eu/app/webroot/media/files/87089753166.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/musewurovivoxu.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/uvo205p1ohkm2goq6m9ropln62/69399432447.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/57281550786.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b091c88cda9---48703221654.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/vibuvuseboselaxagumup.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/85266986452.pdfIn PDF document text
    • http://rulife.ru/ckfinder/userfiles/files/10631805933.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/9ad3b2a79879b88c09083695cdc2bfc8/30151988480.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/36989991253.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/vugimedonise.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/160833b9ae9c26---kegoku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=theories+of+learning+pdf+downloadPDF 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_off0000d4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F0 10728 bytes
SHA-256: f7c8cb8227a8a1d1e408195fb39f86c3ad4b465ef69ca0224f78e4bd69ded2c8
font_01_sfnt_off0000ed5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10570 17728 bytes
SHA-256: 66ef524ac35d22a668cbc6f829dc32b8e382eb8d4c785b945f9601506b54d241

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