Malicious PDF — malware analysis report

Static analysis result for SHA-256 8daa340381c0b126…

MALICIOUS

PDF

78.9 KB Created: 2021-07-28 03:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f915ee30fb68816950eab0a5bea5c1fb SHA-1: baeda41e4268c422a6e1657ad1e2e4f350d8efdc SHA-256: 8daa340381c0b1269e57abec0159338e3c7f0090af5b93b979392a86d8a1a50f
144 Risk Score

Malware Insights

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

The file is a PDF that contains numerous links, many of which point to compromised WordPress installations and disposable domains. The ClamAV detection indicates it is a phishing trojan. The embedded links are designed to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3497

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://beytarimcilik.com/admin/editor_resim/file/9850738738.pdf In PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607af99da058e---36525169148.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/mofisekusubosewazumepi.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9c0c0df1d9526f891b76bc2972b5fd14/madoto.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/2c9c4c6b054e607dabc6bde5066f4628/61604034930.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/petakuxugimeko.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9184051ce---81551545168.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/71c91e3f8e535a6f5af3e907b9c89522/33962407074.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/mixuz.pdfIn PDF document text
    • http://canoeing.by/pics/files/33555706320.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/87225354749.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d7e56c983---75598275567.pdfPDF link annotation
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/0b5659d400a85979225ff88319f7f188/21908196653.pdfIn PDF document text
    • https://a5productions.com/home/a5pro/public_html/ckfinder/userfiles/files/gatofegojoz.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/73014841475.pdfIn PDF document text
    • http://a-mega.ua/images/uploads/file/dogepegomadevadono.pdfIn PDF document text
    • https://marmarases.com/upload/ckfinder/files/1992633160.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/wizugoxabuditufoniv.pdfIn PDF document text
    • http://immodraft.de/images/architekten_agentur_images_/file/11715505716.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/guwaxadabirixelug.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/23ec0e670d2316ecfb424523b8ec177e/vuganeviwofelix.pdfIn PDF document text
    • http://dakmet.pl/upload/zabetifemesi.pdfIn PDF document text
    • http://kiszelyugyvediiroda.hu/docs/file/87728432744.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=limpieza+hep%C3%A1tica+y+de+la+ves%C3%ADcula+pdf+gratisPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E1 17204 bytes
SHA-256: a13aae1cd7c3b75a472a6f071ffe62e8ce3dc855403ea7e0888933e659d8a04f
font_01_sfnt_off00011507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11507 11380 bytes
SHA-256: 0b80bd0cb5006526f9d0abc401b4dba49973c45146544f744aa7929c55790404