Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d142be2f9461a33…

MALICIOUS

PDF

33.8 KB Authoring application: Soda PDF
MD5: f7b7d1b69573ec80ea15f45df2366d9f SHA-1: 24189601e0fcb6bde9a16df9c3a066f82c820a69 SHA-256: 7d142be2f9461a33dcad098ae59eb7664f15255aeffacf1a130e80d1f75403f1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded URLs pointing to external PDF files, suggesting a link farm or distribution network. The primary URL identified is http://waygonebook.com/uploads/1/3/0/6/130604495/513735.pdf. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://waygonebook.com/uploads/1/3/0/6/130604495/513735.pdf
    • http://keka.help-vk.ru/uploads/2020/01/28/253e5f42bb86a85.pdf
    • http://brokersue.com/uploads/1/3/0/6/130605146/jalupu_vowowuvapezalu_nobunolidelov.pdf
    • http://bravemotorsport.com/uploads/1/3/0/5/130551943/pavetewuve.pdf
    • http://miprimapromediohoy.com/uploads/1/3/0/5/130588685/68a8300.pdf
    • http://curanna.com/uploads/1/3/0/4/130477890/wukazimoxibofan.pdf
    • http://moment2meditate.org/uploads/1/3/0/4/130476101/fuguvofidukepineb.pdf
    • http://internalalignment.net/uploads/1/3/0/7/130775201/2d997.pdf
    • http://gotxilus.weebly.com/uploads/1/3/0/3/130379110/6234373.pdf
    • http://jigopo.vodabur1.ru/uploads/2020/01/28/55b454d2064928.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/6/130621137/130621137.html#what+is+aquamin+calcium

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e8c.bin
d032155c63ecb5a06b89a63d399f9461a4e3b4d8752f4bf0521734348addea6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8C 7780 bytes

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