Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1952d5987d40487…

MALICIOUS

PDF

56.1 KB Authoring application: Soda PDF
MD5: 745c5dc3eab97ec715ca1c2a3f4cbeba SHA-1: 85e5b1036159ba3932b3ff338eab1ddf85ab3e84 SHA-256: b1952d5987d404872b31db938269d800799a4e6dfffadaf3b0ce18ae3f2c14b9
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing or malicious redirection intent. The embedded URLs are likely part of a link farm designed to distribute traffic to malicious sites.

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://convegnoartemercatosiena.com/uploads/1/3/0/3/130323127/wopivufu.pdf
    • http://digitalmarketingcourses.com/uploads/1/3/0/4/130436020/74e63.pdf
    • http://chicagokilnrepair.com/uploads/1/3/0/5/130551402/gasevukuw.pdf
    • http://caribbean-cannabis.com/uploads/1/3/0/6/130621337/1bb337e57c8d.pdf
    • http://newperspectivemedical.com/uploads/1/3/0/6/130620451/130620451.html#tony%27s+beginner+fingerstyle+guitar+lesson

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125e.bin
a0d0da66062ad8bb96b75c8951f6e8836cd7d7981810bf7bdfd420700a482ca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125E 9312 bytes
font_01_sfnt_off00009685.bin
1b0e42fed74369e888e442f77f4cb4fc8cdd18be8dcb9876f7cecddad874d053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9685 16080 bytes

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