Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac397de0eaf09c3a…

MALICIOUS

PDF

39.4 KB Authoring application: Serif PagePlus
MD5: 17397472e4e047314de78a2e6dbfa1e0 SHA-1: ece1a17111c7ee827e43f4a0412bf2948daa390f SHA-256: ac397de0eaf09c3a084799379ea9a7b0e04beed4f744a8599917e227c9f433cb
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a PDF SEO link farm and a ClamAV detection for phishing malware. The document body contains numerous embedded URLs pointing to external PDF files, suggesting a redirection or content-loading mechanism. The primary attack pattern appears to be the distribution of malicious links disguised within a PDF document, likely for phishing or malware delivery.

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://scottbrownconsults.com/uploads/1/3/0/7/130774965/1335196.pdf
    • http://dunawaysurveying.com/uploads/1/3/0/5/130588489/joxunoxerewowuko.pdf
    • http://canyoncitygrill.com/uploads/1/3/0/5/130544584/desonasixiguvatuvur.pdf
    • http://stonesoaps.com/uploads/1/3/0/7/130739500/6f192959.pdf
    • http://kris-ginadesigns.com/uploads/1/3/0/5/130539599/vukosogabuger_rojaxuje.pdf
    • http://ndchair.com/uploads/1/3/0/3/130379681/130379681.html#anterior+staphyloma+formed+by

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001093.bin
2738b5bb83dff142020d032bf494c117451925d603f6347a5138653179cba8a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093 8176 bytes
font_01_sfnt_off00005f5c.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5C 2616 bytes

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