Malicious PDF — malware analysis report

Static analysis result for SHA-256 742eec2d3f9b2d64…

MALICIOUS

PDF

83.3 KB Created: 2021-06-25 19:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6647df42b6ee0809e789d32b57b5552e SHA-1: 7b1d26b4969f4b6ab8189f1b9e55d546793cb413 SHA-256: 742eec2d3f9b2d6441f470fd289ca39d7afe124fecaca948d9a433fbc4808855
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs that form a link farm, pointing to compromised WordPress sites and other potentially malicious domains. The primary purpose appears to be directing users to external, untrusted content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9783

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://laborke.ru/uplcv?utm_term=plaintiff+meaning+in+tamil PDF link annotation
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a65d83ddcd4---wamizilo.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/9bag9qi4iprf4g23dj1usnmk0h/65421189643.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c531d373497---24066727658.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///77015169264.pdfIn PDF document text
    • https://antae.be/app/webroot/uploads/file/74004569627.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf95a7b5459---91888178099.pdfIn PDF document text
    • http://balassalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/63340160985.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/hnavu545u32nf0ca0gqdokdb5t/23846873731.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/tcsikgm2fthllmfk1824jll5qg/xiriwekud.pdfIn PDF document text
    • https://viticoltura-enologia.com/file/gotepi.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/50440070685.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c87b9eaf07f---vugulemomavugak.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075cd58666e8---96561459984.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/e9f649c5cf9244c6f0252f754dd4c518/pekosepemu.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f3803016b---15342905837.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607596ae9d027---leloretaladumugu.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/fiwipomeradum.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/xatamumewuw.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/3491340894f322edf5c96a7758f0d8eb/21914191525.pdfIn PDF document text
    • http://parcroyale.hk/userfiles/29297756483.pdfIn PDF document text
    • http://brette-animation.com/userfiles/file/20195379514.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/a370f4ad62f788bdd3861de2bd339414/fulidusikulonuduw.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/jetimedelika.pdfIn PDF document text
    • http://geteffective.biz/uploadfiles/file/23092784927.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/pakifewaliwewufelexupodop.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/400052e11186618d223320ee3066d5a1/furenunalaladotaramowos.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC435 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 16856 bytes
SHA-256: 992a9d9b8aca145a7ef56204af3c61bb3b094f14a2ac06e5cd880f532f6c47ef
font_02_sfnt_off0000f4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A6 10172 bytes
SHA-256: bfc1e8be45f6b0a579afe7dda3b92d2595f627d375ebab3b7aa0342e892273cb
font_03_sfnt_off00010b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B54 19636 bytes
SHA-256: a94997315eab625e701907144ce6194023df4f5d2e7a7012541b86ff312bfe42

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