Malicious PDF — malware analysis report

Static analysis result for SHA-256 373ccacb942c7421…

MALICIOUS

PDF

39.4 KB Authoring application: Inkscape
MD5: 3910649ad7463edb1e40bc2e6a17a7a5 SHA-1: c88bbce4e9b0d4916e34614e47061c244c557c7b SHA-256: 373ccacb942c74211b67d65233e866a3570fe784352f5f2bec7e7dcb0e96dd60
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files, indicating a link farm or redirection mechanism. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or traffic-driving campaign. The embedded document body text, though corrupted, mentions 'malaria during pregnancy', which is likely a lure to disguise the malicious intent.

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://webdisk.jadejordanleigh.com/uploads/1/3/0/5/130540609/gewuxazuj_vejaresulimebi.pdf
    • http://thewormtequila.com/uploads/1/3/0/4/130490786/4916e17f.pdf
    • http://kbcornholegames.com/uploads/1/3/0/2/130291623/diwinunegufe-numezajirasu.pdf
    • http://www.bellemontazbahai.org/uploads/1/3/0/4/130489248/2176773.pdf
    • http://cryptomedium.com/uploads/1/3/0/8/130814014/5962447.pdf
    • http://zipfiber.net/uploads/1/3/0/3/130313613/bivobakorefo.pdf
    • http://backandbarberingstudio.ca/uploads/1/3/0/5/130589449/2959742.pdf
    • http://pomaceaproject.org/uploads/1/3/0/5/130551876/gizusenoretotu-zelose.pdf
    • http://chiupsilonfoundation.com/uploads/1/3/0/7/130739015/6650062.pdf
    • http://www.txkittiehawk.com/uploads/1/3/0/9/130969377/7e414b8218e73.pdf
    • http://insurancelady-agency.com/uploads/1/3/0/5/130588482/6236582.pdf
    • http://goldclub.lucky1st.com/uploads/1/3/0/8/130814195/130814195.html#impact+of+malaria+during+pregnancy
    • http://thewormtequila.com/uploads/1/3/0/4/130490786/4916e17f.pd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004366.bin
b1c04e7374689e93f71118d3c196bec76243df2efe0b1d41e8406ae925a43c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4366 7932 bytes

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