Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b9bfd5ee09f671…

MALICIOUS

PDF

39.5 KB Authoring application: LibreOffice
MD5: 93bec3eace61039e916ca907392d7f80 SHA-1: 5c6de106cb4c0e6a5e40ae72cb769b32a60e9d2c SHA-256: c1b9bfd5ee09f671d080f772ee551c67467b680b2ee4879188fb41a767abff00
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body, though partially corrupted, contains references to the linked URLs, reinforcing the link farm attack pattern.

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 https://gomusawuk.weebly.com/uploads/1/3/0/6/130604222/kefoxotuviwid.pdf
    • http://musingsofageek.com/uploads/1/3/0/5/130550834/naseworeviw_puvumodibojeki_nowugenimir_vewamotojiwewuw.pdf
    • http://montecristifinesouthamericanarts.com/uploads/1/3/0/5/130551597/7669698.pdf
    • http://missiondrivenresources.com/uploads/1/3/0/3/130379864/bb0884.pdf
    • http://onlinemobiletrainer.com/uploads/1/3/0/5/130544138/merova.pdf
    • http://mywelby.org/uploads/1/3/0/5/130589124/2263977.pdf
    • http://cfthomas.com/uploads/1/3/0/4/130436343/130436343.html#how+to+make+crispy+potato+wedges+in+air+fryer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001187.bin
e8a43d9c3add9992cbaf1b52d4ec7d0e0e627845dfcd4bbafc772d295d95c843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1187 9044 bytes

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