Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b82292ccc9c3c8…

MALICIOUS

PDF

41.0 KB Authoring application: PDFBox
MD5: e40affb47b9d82465069ce25d7513abb SHA-1: 80ec124d5a19cb723585f30e2ca4cc7df228365b SHA-256: e1b82292ccc9c3c86832388b76ab1d7a87b03d8500e738a5331d9a9e6fdc4763
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm. The heuristic 'PDF_SEO_LINK_FARM' and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a malicious intent, likely to redirect users to phishing sites or download further malware. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://nationalbusinesseducationweek.com/uploads/1/3/0/6/130639755/42737.pdf
    • http://worldofexotics.com/uploads/1/3/0/3/130379488/palogav.pdf
    • http://aspoonfulsparkle.com/uploads/1/3/0/4/130476624/pawodise.pdf
    • http://millikenentertainment.net/uploads/1/3/0/6/130620885/5070478.pdf
    • https://jisukijusuze.weebly.com/uploads/1/3/0/2/130272886/dusow.pdf
    • http://steamsa.org/uploads/1/3/0/6/130603715/546637.pdf
    • http://tmctouch.tech/uploads/1/3/0/5/130589002/1319783.pdf
    • http://randakksdevelopment.com/uploads/1/3/0/5/130544230/8940843.pdf
    • http://littlethatch.net/uploads/1/3/0/2/130272591/xokegirujoguwiz.pdf
    • http://mikacollins.com/uploads/1/3/0/4/130477882/4174684.pdf
    • http://novembereleven.net/uploads/1/3/0/2/130272880/dovilokaxivatiwifi.pdf
    • http://newpstowing.com/uploads/1/3/0/7/130739090/130739090.html#grand+theft+auto+v+five+cheat+codes+ps3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000126a.bin
b1f29180c7068c7cd0da47fd51d1ae73d883a86252e399511ca2b61a91ac621a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126A 8136 bytes

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