Malicious PDF — malware analysis report

Static analysis result for SHA-256 347ed962e0ffa4c6…

MALICIOUS

PDF

46.0 KB Authoring application: PDFBox
MD5: 7c65b2f70fb3df4a5b991af9ad96c756 SHA-1: 06803cf3f4add19f14bf34aa86df67caebdac5ac SHA-256: 347ed962e0ffa4c6197b0ae597780a11c5af135470fd62b23e82c8009780470f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The embedded URLs point to various PDF files and an HTML page, suggesting a link farm designed to direct users to potentially malicious content.

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://tkbent.com/uploads/1/3/0/6/130640109/rebarawema.pdf
    • http://loneezyvisionz.com/uploads/1/3/0/4/130436362/3268860.pdf
    • http://audio4n6.com/uploads/1/3/0/2/130289346/xuvubojonofadi-laxerebo-xotazevezu.pdf
    • http://recordingstudiospokane.com/uploads/1/3/0/6/130603825/difitabibetaziwi.pdf
    • http://oakclass.com/uploads/1/3/0/2/130273803/130273803.html#top+100+billboard+songs+2018

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001093.bin
ffa90806e34d135bd24d5e25822c7dde4a64570ffe69bc3706035c8395b7842f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093 8748 bytes
font_01_sfnt_off00006e64.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E64 16036 bytes

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