Malicious PDF — malware analysis report

Static analysis result for SHA-256 58fcd17602243a54…

MALICIOUS

PDF

52.3 KB Authoring application: PDFedit
MD5: f9d40271344c997d4b5c6d8a537bc98e SHA-1: 2510c7fb95f72d4130c3bbb581d5459a10cce22e SHA-256: 58fcd17602243a54cf65de01b1db54c558ad5ffa493779d82efd9578b881f35e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or SEO spamming technique. The ClamAV detection and ML classifier further support its malicious nature. The primary attack pattern involves leveraging these numerous links, likely to distribute further malicious content or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://migrationbot.ca/uploads/1/3/0/5/130540814/4880688.pdf
    • http://backtopulse.com/uploads/1/3/0/6/130639062/fizuvirekune-tisevo-gazezinanudifit-fapivonigarar.pdf
    • http://nylarose.co/uploads/1/3/0/6/130640090/mamafuje.pdf
    • http://fandomaf.com/uploads/1/3/0/7/130776114/kixapezeboso-tajaborideziro-nitetubozijoz.pdf
    • http://investl.net/uploads/1/3/0/5/130551208/wivixazabiku_webitabatel.pdf
    • http://ushempcorporation.com/uploads/1/3/0/6/130621581/sosabinodedifunen.pdf
    • http://freespiritgirl.com/uploads/1/3/0/6/130605002/daxatizuj-dezije.pdf
    • http://simoncdrew.com/uploads/1/3/0/5/130550800/sibel-wiwurix.pdf
    • http://mooderopah.co.uk/uploads/1/3/0/6/130639641/6d69fea.pdf
    • http://bonniesthlm.com/uploads/1/3/0/6/130620159/bomozudanajo.pdf
    • http://yamt.org/uploads/1/3/0/6/130605094/1201989.pdf
    • http://mhessential.net/uploads/1/3/0/7/130776132/navejexawuw-pexepiwunadoma.pdf
    • http://nobuhotelmarbella.devsite-1.com/uploads/1/3/0/2/130271043/130271043.html#electrolysis+of+cuso4+solution+using+platinum+electrodes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001458.bin
ffbc3a916123ae9b25d05c24aac8ffc9f66cf1678d7d12fc5b563dc414ab7bbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1458 8888 bytes

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