Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64e005534ae883d…

MALICIOUS

PDF

36.6 KB Authoring application: Karbon
MD5: 4b1b418fec2dc1d25bd1e9f0d58eb331 SHA-1: 3b48ae9b148f3767af35f8bad7d27634ed616aeb SHA-256: f64e005534ae883decf144e4fbec3fd3b86c591bc51ceb0f88486d67f7ebe01b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO poisoning attack. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely related to traffic redirection or phishing. No scripts were extracted from this sample.

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://hostmaster.elite-classroom.co.uk/uploads/1/3/0/5/130538869/wetavozegebukiruposo.pdf
    • http://srirachacamp.com/uploads/1/3/0/5/130541641/xadir.pdf
    • http://amdlifestylemgmt.com/uploads/1/3/0/6/130620453/tatalibakavuponidu.pdf
    • http://bridgereadvisorsllc.com/uploads/1/3/0/4/130483773/57702a014eaa1.pdf
    • http://phantom-rust.net/uploads/1/3/0/5/130589184/somanewom_dokapopaju.pdf
    • http://rockingtheboat.net/uploads/1/3/0/8/130874252/6f66b5.pdf
    • http://ianmichaelwaddell.com/uploads/1/3/0/4/130479350/sajedarutaxa-gowozo.pdf
    • http://thegentlemansfarm.net/uploads/1/3/0/3/130379458/1212065.pdf
    • http://abcstronger.net/uploads/1/3/0/6/130621024/wijesabo.pdf
    • http://kellypick.com/uploads/1/3/0/5/130588906/dee58a.pdf
    • http://myasianwiki.com/uploads/1/3/0/2/130289765/b34460c95d.pdf
    • http://cvservicesonline.com/uploads/1/3/0/2/130288318/vaweb_zowamezixare_pegapuf.pdf
    • http://74-123-76-212.mgwnet.com/uploads/1/3/0/6/130639061/130639061.html#arduino+mega+2560+rev+3+usb+driver

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036c7.bin
37330bd6c114cb2c62e722e9863bb5fe694462a88d413192ef12d877cf20113c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36C7 8056 bytes

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