Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa213168c58f686…

MALICIOUS

PDF

85.6 KB Created: 2021-06-10 10:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ddd0579b197bf991f9ceb0bda5cab9e SHA-1: 7e8e50b4fd9d2e58f45dbf36443b98060e3d5169 SHA-256: 7fa213168c58f68631244bab728adfad8ccbd0a9b144bdad89211bae7b4025dc
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9288

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 https://cructi.ru/uplcv?utm_term=sense+and+sensibility+123movies
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc5935260f---46128791907.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/91c84a043a617271a763861f6384c3fb/penodagalezut.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0a5490409---fodefojibotuxup.pdf
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b46810b3976---gogatovazunamisusa.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728dbc14958---57831287337.pdf
    • http://cropscipublisher.com/files/upfiles/file/pulojubitewiv.pdf
    • https://hondamienbac.vn/userfiles/file/17397374958.pdf
    • http://emotionpicturesfestival.gr/userfiles/file/savowefer.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0c08d99b8---bakikudoxavarezaku.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/snm7biss6sjbar7d34tabb39n8/wobamolakebelujopopevega.pdf
    • http://tafgambiatours.com/userfiles/file/80623099791.pdf
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/c1c1fsse0mr0j9nkh3j0b12hfu/69394901445.pdf
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/abeab3dc9ff9e2595122b72b9ae81d61/xewexegitokital.pdf
    • http://alituncer.com/userfiles/file/pixax.pdf
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16077bb059e036---vovugosadokasag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fef3.bin
2e5715abd2d444735710de9d9373d60703634179dd143d6f428901f4b465a412		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF3 5416 bytes
font_01_sfnt_off0001114c.bin
3f4202b6e293c28fbfc469d2a1bee5dbc164a36b4af39dd0b1ee98135de19ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1114C 12488 bytes
font_02_sfnt_off00013a30.bin
48b474c7129ee55d7bf4accc86141dfa1c33440ae0a3cdfac09e571e5f7e8d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A30 16344 bytes

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