Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb53b5a87e83fa2…

MALICIOUS

PDF

59.6 KB Created: 2021-09-07 21:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ba0b6fa3a0c9ba3488e16356b403fff6 SHA-1: b83320d1046ebea65d933f146817e1b0516fa42a SHA-256: 6eb53b5a87e83fa2cf8ff449c8040e8db4e3930f761ac23ea8e3dd540d4014e0
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to external websites, many of which are hosted on compromised CMS upload storage or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a link farm suggests the document is designed to lure users to potentially malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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://dukeofmarshall.com/ckfinder/userfiles/files/24592482642.pdf In PDF document text
    • https://vnsteeldetailing.com/UserFiles/files/laveranuwamikeme.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/sopivofigejipazavutukude.pdfIn PDF document text
    • http://abwlanham.com/uploads/files/88228744768.pdfIn PDF document text
    • https://imagebrandstudio.com/userfiles/file/ratesokugi.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/93103102430.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/61d031563d84314e5dc6f9cd05e8ba6c/sanid.pdfIn PDF document text
    • http://www.mamafoundation.cz/ckfinder/userfiles/files/81110274763.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/13532249069.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/7759abd6d1bf9e971156caef4ebb5edd/zesotu.pdfIn PDF document text
    • https://perfecthospital.org/FCKeditor/file/71561105622.pdfIn PDF document text
    • http://cungcapluonech.com/upload/files/wabedupoje.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/72543842856.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609228d011808---sagapepa.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/7ebd59da04f17ce378b15252ecebd013/wupam.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0adb37871b---29945638648.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1611082dc932fe---46323037127.pdfIn PDF document text
    • http://taxiluzern.ch/khurasan/userfiles/files/rekixuxi.pdfIn PDF document text
    • http://kayapaliinsaat.net/file/84199594429.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/suxebudidiluxesegas.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/rujajanekewasidekepuwares.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/rulizakodivoxojotefenexud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=pembangunan+infrastruktur+di+indonesia+pdfPDF 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_off0000d306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD306 11128 bytes
SHA-256: bf9ec3f6e64ed6dca9f81c31d9bb2d425785e6a648d38186e903e2415552f0d4

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