Malicious PDF — malware analysis report

Static analysis result for SHA-256 868e2090e236726d…

MALICIOUS

PDF

112.1 KB Authoring application: Pdftk
MD5: 1351a1e58b903b92381ace43e5b83e73 SHA-1: ed542f0f17574d6324b943d7fcb8579ae8d30921 SHA-256: 868e2090e236726da60382dee8be6fb81d4802f26b234b28466e3550a18721f4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for distributing malicious content or conducting phishing attacks. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports its malicious nature. The document body itself is heavily obfuscated and contains references to external PDFs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kimibath.com/uploads/1/3/0/6/130639886/nurajexivokeburata.pdf
    • http://bucknerhn.org/uploads/1/3/0/6/130604656/d6f607fa7b.pdf
    • http://nikhitavaddineni.com/uploads/1/3/0/5/130550951/f5c12a9cb8c2c6.pdf
    • http://drumlessonsatl.com/uploads/1/3/0/6/130639600/5444433.pdf
    • http://elenatoscano.com/uploads/1/3/0/7/130740363/begipupozaxekivo.pdf
    • http://plumandmoss.com/uploads/1/3/0/4/130435546/5369475.pdf
    • http://lune-blanc.com/uploads/1/3/0/7/130738622/mimisevugo.pdf
    • http://thefountainofjoy.org/uploads/1/3/0/2/130274291/7039dbdb9a1c1.pdf
    • http://verticalfitness100.com/uploads/1/3/0/2/130292073/308806.pdf
    • http://windycity3d.com/uploads/1/3/0/3/130313784/jenenututoz.pdf
    • http://theracingvoice.com/uploads/1/3/0/7/130775154/9946721.pdf
    • http://britanynavarretephotography.com/uploads/1/3/0/2/130270963/bbfff87dcd.pdf
    • http://elliefernandez.com/uploads/1/3/0/4/130488096/vidoronavupam.pdf
    • http://aqua-splashinc.com/uploads/1/3/0/6/130639282/130639282.html#7th+day+adventist+beliefs
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000020b8.bin
2d45e070f45eb71e42118de54980e5152fa52dab5a1f59305fc066f61bf60ee2
pdf-font-stream PDF embedded font (sfnt) at offset 0x20B8 10296 bytes
font_01_sfnt_off0000e58b.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211
pdf-font-stream PDF embedded font (sfnt) at offset 0xE58B 16036 bytes