Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9d30b4d4050c7d…

MALICIOUS

PDF

67.9 KB Created: 2021-07-16 23:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 326263195fd3b4e41674f41aacff2e6b SHA-1: b61ccfff83f43d6d2dba0428f862ed7b2e29d2a3 SHA-256: 6e9d30b4d4050c7d6fa706222d15826a4587b676a5b77da70b162812dd10b5d5
154 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple compromised CMS upload directories, indicating an attempt to host malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high confidence score further support its malicious nature. The primary goal appears to be redirecting users to external sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6906

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://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/fnppt8tv61pb5terb5r0s709k9/xexexisaxibiji.pdf In PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/25912550718.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/tabegibujulonemagu.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608537de2f474---67807962437.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/vopujabatogakaturogapig.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/02d0cd1eba67aaf0ae95927d4fea6e26/41574680754.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160823ef8e2057---90553639849.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608da70b77b21---xerateponexurezaruxep.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b415f61d8fa773648b4e7f9fff022cd9/wukuxorixenewato.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/1fc8aaaf3a39ba6f989daa4395bdaf81/vutilodijuruzijo.pdfIn PDF document text
    • http://rorolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rifozi.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29ce5c54ed---39056383471.pdfIn PDF document text
    • http://berbun.com/user_img/file/89968710897.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/59e76190bf232da718a84a0b76fee482/1563493337.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/3290215503.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/mepumefuzaledos.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/tokadanu.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/67faa4dcb6fcaa2f39f8ac2c316d1f6a/67724204185.pdfIn PDF document text
    • http://hillsdale66ersreunion.com/clients/c/c6/c679c52642bc64dd8629b98fb95ccc77/File/pixewubidarodemilosebi.pdfIn PDF document text
    • http://decaiyun.com/upload/file/210703140849783842umvab7s40vhi.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/82shm48npdrmsk7ts3qch8h0v1/29627765978.pdfIn PDF document text
    • http://thebeautyofdesign.nl/ckfinder/userfiles/files/zemujuwurapa.pdfIn PDF document text
    • https://anfauglir.com/images/file/jezuretudowokax.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e9ccb06d9---ledefusujogirabize.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=chemistry+puzzles+and+games+answersPDF 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_off0000f2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 11112 bytes
SHA-256: fc35cd80a1b2030c32a7ea5f93681e82c68c82a1f89f5412c3e6dad123aca45a