Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3dbc064c7c37250…

MALICIOUS

PDF

36.6 KB Authoring application: Serif PagePlus
MD5: 99fd837d8e37ca7a52ca5fd20cbb155f SHA-1: e6fc23b1d7302c5983532f7ca7b863754ff5f43d SHA-256: f3dbc064c7c3725098a3e523083d305d6e77db5d676b0dccf33c53d4b9a92e46
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of embedded links, many of which are hosted on suspicious domains and appear to be part of a link farm. The document body, though partially corrupted, contains text related to health queries and also embeds several of these suspicious URLs, suggesting a phishing or redirection attempt.

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://louisvillemoldsolutions.com/uploads/1/3/0/3/130379458/nikuvuvesagufazoraxa.pdf
    • http://kugano.u-l.tech/uploads/2020/01/29/nolupobezozizuwake.pdf
    • http://mentok.net/uploads/1/3/0/7/130738620/bupusejuv.pdf
    • http://seelenleben.ch/uploads/1/3/0/7/130739234/2079516.pdf
    • http://octsummershow.com/uploads/1/3/0/5/130590082/436239.pdf
    • http://migrationbot.ca/uploads/1/3/0/5/130551468/74c7d5f.pdf
    • http://rowanprssa.com/uploads/1/3/0/6/130620410/sesekegul.pdf
    • https://fabibuveku.weebly.com/uploads/1/3/0/5/130589228/8440899c0aca.pdf
    • http://mrlapta.com/uploads/1/3/0/6/130604281/130604281.html#sharp+pain+in+breast+pregnancy+or+pms

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000116b.bin
bcddefad1085d9fc408819a4a832bc8e115ee07b8877d139eda25a7c50647aa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x116B 7752 bytes