Malicious PDF — malware analysis report

Static analysis result for SHA-256 262e66bece61b8a7…

MALICIOUS

PDF

47.7 KB Authoring application: pdf-parser
MD5: 25d6652d0fc7936f07f4c210555f8d63 SHA-1: 91b027cac7cfd21d0bcba68fc4e43c0f2f05cc90 SHA-256: 262e66bece61b8a7b5a4aa856994bb67e5b40ca74ace15d045722089cced50c2
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or SEO spam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely used to redirect users to malicious content or download further payloads.

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://gobin.repuljvelunk.website/uploads/2020/01/29/wivaxe_bekakebutam_risoxojax_xobebewedogebo.pdf
    • http://racialwar.net/uploads/1/3/0/3/130323209/1363fdfa99eba.pdf
    • http://beverlywilshire.org/uploads/1/3/0/7/130739164/bec7470538.pdf
    • http://mybowerstudio.com/uploads/1/3/0/3/130323630/7961344.pdf
    • http://pobinuwipu.te-global.site/uploads/2020/01/28/tateludetupodaf.pdf
    • http://puzif.metrika.agency/uploads/2020/01/28/37e7a6d0f4d42.pdf
    • http://mrgroucho.com/uploads/1/3/0/3/130313686/dadajuvewa.pdf
    • http://monicamandell.com/uploads/1/3/0/2/130289760/8631127.pdf
    • http://michaudwellness.com/uploads/1/3/0/7/130740264/130740264.html#chu+cha+cha+video+song

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ff.bin
2d631b3f44a2026540bcc9bf46fa3a26611c033d5bd5b404571527249e07248a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FF 11052 bytes
font_01_sfnt_off000062c2.bin
27aad4e7100ae85831cc1a9cf4859e84521ff6b1ee9ac199fa10e6c4d4b25dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C2 2736 bytes
font_02_sfnt_off00006cf0.bin
a9ad3056d9b9960d36f55645624486350975298872662ac1236c7b15196a41a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF0 21060 bytes

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