Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0d060d84ae7498…

MALICIOUS

PDF

64.0 KB Created: 2021-06-02 09:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f919134137669b796d753098eb68d4b8 SHA-1: da25524077c24507b1f757ab74949c26b1a54f76 SHA-256: 6f0d060d84ae749854bb53e1923e20b11993ff9d83db05ed1177bb2491b3c081
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9745

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://adaviestransportltd.com/userfiles/file/35369205750.pdf
    • http://vienkiemis.lt/app/webroot/uploads/userfiles/files/82090920595.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/i51jvlk026rvk3jov0mhpq7il5/wamufarepesamajituzib.pdf
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085dc3dd8e60---57117905183.pdf
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/jvb0sjf2trrf1b3ei66s48v850/41691925058.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6756d8b41---79140364254.pdf
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/0c99a4f5a74bcefd13078cbdb939b74c/bajefezuguwepiramuro.pdf
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba243755e5---21553663237.pdf
    • https://nestaerospace.com/uploads/file/dumusonamubesevexaxiwovu.pdf
    • http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/zutegabumovanedulosude.pdf
    • https://arhometutor.com/userfiles/file/pekej.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/3eefae43e9e7ab2e779ea7ead6ca3748/12136228002.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40209981da---dorovekadamizozo.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8be02cdaf---porabuzepagekugizuzesuga.pdf
    • http://apartamentosalbatros.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084dac01aa58---mufudaje.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+connect+epson+printer+to+wifi+without+wps
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2a1.bin
6b6b52bb21927568021e0b560909960991d0aee417f3f3baf803cfe7215a5b28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A1 4912 bytes

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