Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f4059b7665e810…

MALICIOUS

PDF

32.5 KB Authoring application: pstoedit
MD5: f64561df9afc0b2eb4e91b5e649bf858 SHA-1: 6fb4a6802c86c981f824b2a047f6c69f9f715baf SHA-256: b9f4059b7665e810817bb251e8ad634b8f207f2715ba66cb633b005347b38b00
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, designed to redirect users to other PDF documents. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or malicious redirection attempt. The embedded URLs are the primary mechanism for this attack.

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://npnbuyer.net/uploads/1/3/0/4/130483477/9716690.pdf
    • http://charunaukwal.com/uploads/1/3/0/4/130436058/6449232.pdf
    • http://kaxuw.trytowin.fun/uploads/2020/01/29/2202745.pdf
    • http://spotcoweb.com/uploads/1/3/0/4/130436071/lojeziseben.pdf
    • https://witoxovi.weebly.com/uploads/1/3/0/3/130379371/6153252.pdf
    • http://michellentherapy.com/uploads/1/3/0/2/130288397/kuretululoviwa.pdf
    • http://youngscientistsseachest.com/uploads/1/3/0/6/130639689/vuzusojavuve.pdf
    • https://gazukexe.weebly.com/uploads/1/3/0/5/130551309/800169.pdf
    • http://tiru.faring8.net/uploads/2020/01/28/pulowo.pdf
    • http://brittanygiametta.com/uploads/1/3/0/5/130589090/2729201.pdf
    • http://nuclearoven.com/uploads/1/3/0/2/130291922/vitaj.pdf
    • http://nathanielrichguitars.com/uploads/1/3/0/6/130604213/e1c930b1b660b9c.pdf
    • http://mikeintucson.com/uploads/1/3/0/2/130287313/130287313.html#thinking+out+loud+piano+sheet+music

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000124f.bin
769f4cc92dbe85d4c3604d31cac7fd2aecb1c64eb2169668acc38df97397dbde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124F 7968 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.