Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e3975441cd26ff…

MALICIOUS

PDF

60.9 KB Created: 2021-07-03 06:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 67c319f43531c52fe7160e3bb0b8455b SHA-1: 139beedba3288fcc0945ed778085ce55d905cad5 SHA-256: 27e3975441cd26fffeb60e9303e7e968283eebb2e22af2811dbf2437103ba728
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other domains, likely intended to lead users to malicious content or phishing pages. The presence of these links suggests an attempt to exploit users through deceptive redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • 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
  • 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://chcial.ru/uplcv?utm_term=bungalow+sea+view
    • http://matstravel.ru/userfiles/file/9796131045.pdf
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074b5451723f---soxokemefakuz.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2162cea8ab---jetifijaxopatixunaji.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986048cd047---41263978867.pdf
    • https://beautyreviveshop.com/newerac2c/userfiles/file/7290734369.pdf
    • http://ettermanenterprises.com/ckfinder/userfiles/files/notifafuwokowebenu.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c361c9bb028c9bc9c37a378cb4e8f9d3/93734353391.pdf
    • http://446888.top/userfiles/file/vedelej.pdf
    • https://bmw-zona.ru/uploads/file/tuwuxuwe.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a71e0881fed---62728267310.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/38180e7e828278ee7d30ad575daf3ab4/86575810682.pdf
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16098f953401a9---jelogiwexekuzose.pdf
    • http://ettermanenterprises.com/ckfinder/userfiles/files/fibawatimukidi.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/85f7d768d2b970689284ac93f409c0c2/92646104169.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/dbbf8f0b67319d1788e67bf712ab86cd/xekiwegabufuwofagifu.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/s4p3v7spe6sr2qnj85tu16v2o6/taxufefadudunokadeta.pdf
    • http://usmleworkout.com/files/file/wafewel.pdf
    • https://wagaskar.com/media/xujuneziguviluriguse.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/e6d8c91579376acaaa4fbb037031e866/bibovomibu.pdf
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16071143c1560c---walozusobudusibaxuzo.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/ib40m63bmqv5t4p7ibhes4kue7/810807675.pdf
    • http://aihyang.com/userfiles/file/51320242141.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bee0.bin
f2ae1690963af9ade055cef103a9098c596bec54cef04f43a1b98514c51e2bb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE0 10392 bytes

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