Malicious PDF — malware analysis report

Static analysis result for SHA-256 5005142c7c574457…

MALICIOUS

PDF

69.3 KB Created: 2021-07-20 08:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5a5c9a3b6cbe3c310c1f965a51f9cf7c SHA-1: 16085fa54d80452aff7550c94ab3e605d1c74f42 SHA-256: 5005142c7c5744575ae54433eb9c1f8a4a8febb3a850121802014edf17df23e8
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7666

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://chameleoncoupons.com/adgprocessing/uploads/files/12601209481.pdf In PDF document text
    • http://hanhthien.net/uploads/file/87530786601.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/017t5hkmphe9l2c0qpi7nfb798/joxolidujenapakorupadig.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/34482498791.pdfIn PDF document text
    • http://royalgoodviewresort.com/Uploads/file/fudaporakola.pdfIn PDF document text
    • https://ngusacdon.com/upload/files/bipujitanipegixo.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3103add84---3802321579.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/ul8ldjf7oq6s56t594i3rqbav6/7222210026.pdfIn PDF document text
    • http://karpatskiles.ru/store/files/xatepawavefogupiwizo.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bab846d0a03---rixarojugitexujesapaliti.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e46b1cfedc---26546421602.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607387913e96e---sakezudesiwufipebomigu.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075f7fce99a7---34328357060.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9e65742ff---reruvotebebekali.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16083554dbc7a8---zorojoxubuseda.pdfIn PDF document text
    • http://belst.by/upload/file/menenuxebuz.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160d4aaaccd164---kafivopuruveza.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/c526ec45a53d0fb7dd4c5aba0b990157/nadijobuzudirifijoja.pdfIn PDF document text
    • https://stopserv.ru/files/file/35341321843.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/jarunijanodonepekaladi.pdfIn PDF document text
    • http://velocimapper.com//webfiles/file/gomefagitilor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=convert+a+pdf+to+doc+onlinePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9A 10544 bytes
SHA-256: f7d68b02100d6d50a5bd1232f6e4a015d6d8ced3d4b5d2f560ed1c9aa64071cf

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