Malicious PDF — malware analysis report

Static analysis result for SHA-256 3879dd2cb85932e0…

MALICIOUS

PDF

37.5 KB Authoring application: LibreOffice
MD5: b503fba93822e7cbd71227512a58dc5c SHA-1: f8e21b309371cdb22d93423be5bd4a710f2f3ee7 SHA-256: 3879dd2cb85932e03041cd2167d5cac7a386011dafb7c33bee1df1eacb3975f9
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. The embedded URLs likely serve as lures to phishing sites or to download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://iquiver.net/uploads/1/3/0/6/130639963/1277141.pdf
    • http://buildyourbody.online/uploads/1/3/0/6/130620965/josasemalipinu_gorip_dofuxaxowe_levilanusawip.pdf
    • http://ltdhelp.ca/uploads/1/3/0/5/130589339/8639231.pdf
    • http://mindforyou.org/uploads/1/3/0/6/130640235/130640235.html#ncert+class+7+maths+integers+worksheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fdc.bin
bb532330292cbf186a04f0865f7e379e9d462b7578a16b39084ef361de9c87f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC 8128 bytes

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