Malicious PDF — malware analysis report

Static analysis result for SHA-256 054a47a9ed804e96…

MALICIOUS

PDF

110.5 KB Created: 2021-08-19 03:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 6115aff939ecdb5d4d8eeefffaca57f4 SHA-1: 5c9db0c9e326beeaa2506ea3811e39c87d1e8c7a SHA-256: 054a47a9ed804e96d0422b49663db1d2bf747065e426ef2634572fe24ef32ede
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting it's used for distributing further malicious content. The 'Browser extension / update installation lure' heuristic strongly indicates a social-engineering tactic to trick users into installing malware or divulging credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9873

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 http://yournamebadges.com/withyourdog/cms_uploads/file/faraxorurekujo.pdf In PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/945ec518b1a0749e6524126f4e446b09/9396088167.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/273074bd53edb969f846860693860001/gekavuwibofowonanigu.pdfIn PDF document text
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ef396fa5f---durutujotewureravewubejal.pdfIn PDF document text
    • http://kapsalonvogue.nl/files/file/3987937421.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160b29480292ab---63226154560.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160af82720a567---40066253712.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/68f83cbbd6599f9e631a9bc2908d3047/70127560531.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/mufipiwal.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607641f50a8f1---15113603710.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/48662566824.pdfIn PDF document text
    • https://blv.by/upload/editor/files/xosanoruzerun.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb80ddfa3a---sisoxadubomi.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2821d8486---fegutasupimupafi.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/6763a9b2b7f9e8a3b4a941a8c3646297/luzaz.pdfIn PDF document text
    • http://pcccmiennam.com/media/ftp/file/68646943974.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca9f151512---vonadako.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/rozubulupesijubuwe.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/gotilupasikuxinudobafoka.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/csoleoi4mhnkmequjflsq1ckom/74646384629.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa8422bb7c7---zexapaluma.pdfIn PDF document text
    • https://ecoverservice.be/gallery/file/93259181766.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/hpnlbuok53m8po5don7bl8cq01/riziroderefuxezuja.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/setem.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/02e4d97736c24463ec7f808ea9cc9457/zajiroruro.pdfIn PDF document text
    • https://dobski.pl/userfiles/file/zasukamosesitewadibifo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=iso+45001+manual+template+free+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_off00014e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E50 11088 bytes
SHA-256: 8c4d92d8d19ab9c1a4d0b18e8186812eabd2dbc0c832842258fb0a254618a338
font_01_sfnt_off0001685c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1685C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001806e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1806E 16704 bytes
SHA-256: c8b50b41654465581f61008e85692aa2ec1e89e808af1b48367e0dca0376c6cf

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