Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c173bb2b2a2b07…

MALICIOUS

PDF

38.7 KB Authoring application: Karbon
MD5: 79f4cf219944233048b3eb9da6fb62bb SHA-1: d0529a0178a3f105ce26e3e121751ecff4d828aa SHA-256: f9c173bb2b2a2b07c77a427db549f5ef7e09c6ec7e28d3480e3ff3237bdaba58
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used to distribute malicious content or conduct phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted, and the document body content is largely unreadable, making it difficult to determine the exact lure.

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://nlwatercolor.weebly.com/uploads/1/3/0/4/130483147/d498b5dc3e1a.pdf
    • http://oxolaxofix.com/uploads/1/3/0/4/130488749/nijuweranobepov.pdf
    • http://pvreiki.com/uploads/1/3/0/5/130551319/61810da17f084.pdf
    • http://alexhammerschmidt.com/uploads/1/3/0/5/130544878/guforerujekimew.pdf
    • https://kokapibinorem.weebly.com/uploads/1/3/0/4/130435875/422462.pdf
    • http://aspoonfulsparkle.com/uploads/1/3/0/5/130541000/8756050.pdf
    • http://007securitynetworking.com/uploads/1/3/0/6/130620928/7139251.pdf
    • http://drpatty.net/uploads/1/3/0/8/130814492/130814492.html#gta+san+andreas+cheats+ps2+fighter+jet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001169.bin
7e0ca706cf05ed2bf22d4a633878d84afbc37c1947da96ee801c54f718d65cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1169 8680 bytes

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