Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb63c9fe998bb763…

MALICIOUS

PDF

74.0 KB Authoring application: LibreOffice Draw
MD5: 9b6efa8d02908ee721c5f81446126fab SHA-1: 1293923bba496f299ddb9cec529b1d6fb65ed304 SHA-256: bb63c9fe998bb763d22bda204f26ed4cdeda8668294b84da6d6248f0cd5afe0f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The primary attack pattern involves directing users to a network of PDF files hosted on various domains, likely to serve as a lure or a distribution point for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fablabitalia.com/uploads/1/3/0/7/130775162/lojukusoxidij.pdf
    • http://dryerbeats.com/uploads/1/3/0/5/130543941/69dc1a2211d818.pdf
    • http://cuskga.com/uploads/1/3/0/5/130539652/8292592.pdf
    • http://nectarfari.com/uploads/1/3/0/3/130323518/29493643.pdf
    • http://synergyassistllc.com/uploads/1/3/0/4/130483751/9b3881b96b5.pdf
    • http://morganneason.com/uploads/1/3/0/3/130323513/0b99ada8d0fc.pdf
    • http://eppsonfoundation.org/uploads/1/3/0/6/130605442/koragili.pdf
    • http://myfantasyfootballworld.com/uploads/1/3/0/6/130621013/5716d3abb0.pdf
    • http://annieholdencoaching.com/uploads/1/3/0/5/130588424/niluj.pdf
    • http://railroadseafood.com/uploads/1/3/0/8/130874330/lexerawezipopi.pdf
    • http://mail.rodhillportraits.com/uploads/1/3/0/6/130639333/130639333.html#dinamalar+latest+tamil+news+today

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007773.bin
ca889182d22413b1a5b6446cd5d954c095bfc2c8b2fec1022b19199100617195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7773 16028 bytes
font_01_sfnt_off00008d65.bin
baed0ce905ca3da625def00708652490efd45f27103935ae61ce7d067126f41b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D65 5396 bytes
font_02_sfnt_off0000a3be.bin
9f0aa41e3acd62f6c7888fcdd9fd832c9eb9be09a58ac5892d093b65cfed43fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3BE 26808 bytes

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