Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8e867a0fb6b504…

MALICIOUS

PDF

59.0 KB Authoring application: SWFTools
MD5: c03511506bbeefe45f25c23271b1ad6a SHA-1: 710d58da649809d63e55623a80218ea3032ff582 SHA-256: 2b8e867a0fb6b5047b9a7db3f65e9d7b7f6839be0b80ea96dec0f81e0265154b
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains many of these same URLs, reinforcing the attack pattern.

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://deenamack.com/uploads/1/3/0/2/130272557/buzeli-bosubopotewinuv-fipitanokokexu-tidosugeg.pdf
    • http://alms-mo.com/uploads/1/3/0/2/130289733/9f66c86ea.pdf
    • http://ccchutch.com/uploads/1/3/0/2/130272275/8644027.pdf
    • http://beyondbedside.com/uploads/1/3/0/6/130640223/pumibuniwinimeduf.pdf
    • http://potentevisuals.com/uploads/1/3/0/3/130313323/xenodidof.pdf
    • http://nerjaweddings.es/uploads/1/3/0/5/130588769/fisanalogizox.pdf
    • http://deficientautobiographicalmemory.com/uploads/1/3/0/4/130483213/3d151338303.pdf
    • http://koshercorner.org/uploads/1/3/0/4/130483821/ziwoja-tegepe.pdf
    • http://krtucker.com/uploads/1/3/0/5/130540352/latujejaxakad-temupaledok-xefunube-taromirex.pdf
    • http://christianmchoi.com/uploads/1/3/0/7/130776828/7f9de.pdf
    • http://sonnyxyshop.com/uploads/1/3/0/3/130324152/luwejojozu.pdf
    • http://adsl-63-206-132-58.vasquezcpa.com/uploads/1/3/0/9/130969946/47128740b27.pdf
    • http://totalnonsensebycashion.com/uploads/1/3/0/4/130476738/melabejutivaroxit.pdf
    • http://steeltec.us/uploads/1/3/0/7/130739653/bivetadez.pdf
    • http://jenirocks.com/uploads/1/3/0/6/130620991/gutokif.pdf
    • http://sabyhage.se/uploads/1/3/0/5/130540134/6906426.pdf
    • http://927cu.salon225.com/uploads/1/3/0/8/130813790/130813790.html#hong+kong+airport+map+gate+67

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014c3.bin
e3ad686d253de69679ce804710aeabced540b1c27497a931b10acbe567aa85b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C3 8672 bytes

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