Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59062ec09b0eeeb…

MALICIOUS

PDF

39.0 KB Authoring application: LibreOffice
MD5: 9860f5316a30122a0e2ad0b5488cc414 SHA-1: 1ea2b04df7b0d99432a79faab1f17e908eb6e0ea SHA-256: e59062ec09b0eeeb8e643ecc2cf530b751c654150ba50de2588a77692781ff46
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicative of a link farm designed to distribute malicious content or conduct phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the attack pattern.

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://nubeginningfarm.com/uploads/1/3/0/7/130738679/6283905.pdf
    • http://nathanielhinton.com/uploads/1/3/0/7/130739290/e3edabd76.pdf
    • http://microschoolontherise.com/uploads/1/3/0/6/130640105/92d53c371b6c3e.pdf
    • http://srdasaulas.com/uploads/1/3/0/2/130288481/1943473.pdf
    • http://beautyparty.co.uk/uploads/1/3/0/2/130270938/tenajapunuje.pdf
    • http://sassyarabia.com/uploads/1/3/0/6/130621989/77909b7d2011fe.pdf
    • http://brooksidepathfinder.com/uploads/1/3/0/3/130323381/130323381.html#how+to+beat+plague+inc

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001096.bin
e8e49eaa9d4d497549604e69568e13fb63e456fa34075953589244f260adcf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1096 8160 bytes
font_01_sfnt_off00005119.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5119 16268 bytes

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