Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c7567efda27a8e…

MALICIOUS

PDF

88.3 KB Created: 2021-09-18 09:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9ad69aecfd1c11636da7bc2172aa25ef SHA-1: a549d81b309430ed1a3bd03ecc53ec9b65aa01a7 SHA-256: 67c7567efda27a8e54e728de97f06c5e5277439fade71e3cfca75e52c04fd65b
196 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, specifically prompting the user to install a browser extension or update to view content. This is supported by the 'SE_BROWSER_INSTALL_LURE' heuristic and the numerous external links, many of which point to potentially compromised websites or disposable hosting. While no scripts were directly extracted, the presence of external links and the nature of the lure suggest a potential for downloading and executing further malicious payloads, aligning with common phishing and malware distribution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/73520346085.pdf In PDF document text
    • http://www.vikingmaterials.com/img/86818435638.pdfIn PDF document text
    • http://donauwell.at/userfiles/file/liniwofezexivok.pdfIn PDF document text
    • https://zlato-stribro-investice.com/upload/files/nadujafofezowakija.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/wobimagesev.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/jebesalopezapenowol.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/jimebikavukuk.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16142290b2fb70---58611166325.pdfIn PDF document text
    • https://alsultantrading.ae/userfiles/files/sunuduvemitotezovumuler.pdfIn PDF document text
    • http://scsytech.com/upload/files/81763753924.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/kewizajimavuvuzumenozu.pdfIn PDF document text
    • http://vinmexindia.com/uploads/duwixukajok.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/vukasavaveb.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d922595b31---57244857948.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/77a7a2kf6u7vntb8np6uarsv1c/68923031226.pdfIn PDF document text
    • http://mecaniquekd.ca/upload/file/53205602579.pdfIn PDF document text
    • https://basisangka.com/contents/files/wapobeti.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161416599a9373---duzitukevomolo.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16144154881e1d---kuzotixawaso.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/13279841285.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/161422ace5d6fe---gatovatagop.pdfIn PDF document text
    • https://foundationkuzmanov.com/files/wejifetenuze.pdfIn PDF document text
    • http://lerucherdesanges.fr/userfiles/file/gekebamabedamelubefijuluz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=zoom+android+chromePDF 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_off0000f60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E20 17960 bytes
SHA-256: 7514a0ceaa5d97aa3884f35ffee3abc442af85cba7266defd126e08dfda6d603
font_02_sfnt_off00013cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB1 10284 bytes
SHA-256: 5242871786132566d68ff91c3edb2425e428c51fdbd94fb256f5c2e81ac13016

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