Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bad8065a28080bc…

MALICIOUS

PDF

58.7 KB Authoring application: pdf-parser
MD5: 245383ad7eecf670fc9c0559572c0730 SHA-1: be9b3ea949d8b69955c6607356cea008a49bab8f SHA-256: 9bad8065a28080bc18200b3bd222a04fa20b4fb9911aafb34a837d38c4d0d925
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The embedded URLs are likely used to redirect users to malicious websites for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://bardfamilymarketgarden.com/uploads/1/3/0/4/130488626/4670538.pdf
    • http://ericsyvertson.com/uploads/1/3/0/4/130490328/lapibubulusagumotu.pdf
    • http://zixivo.black-port.ru/uploads/2020/01/28/wiraj-saxanulirik.pdf
    • http://mytridentestates.com/uploads/1/3/0/6/130604594/1e4480d7b8da.pdf
    • http://ne-surgerycenter.net/uploads/1/3/0/7/130738964/130738964.html#lionshead+beer+cap+puzzle+answers

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128e.bin
8543a7bbc5418c86f13ff7cfced64b4f6ab2f789d0c43bb9b4bb0ad862c71327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E 9964 bytes
font_01_sfnt_off0000970c.bin
d03effb05035d7093f5fad6623a6d4c284775301d1cc53a829cf3f25d43ca7b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970C 16244 bytes
font_02_sfnt_off0000ac30.bin
2c32c498f23db3cae400dac070c72b38d41a5d5dbe5041cbe08e7cee44e1acfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC30 2648 bytes

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