Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a1660bbb7dcf57…

MALICIOUS

PDF

45.3 KB Authoring application: Karbon
MD5: a665782cfbc28a50c09516bc4d737dac SHA-1: e94ec6246892ab2a23029738479a6df14446dbe8 SHA-256: 90a1660bbb7dcf57b441a6eca26d2419d82c8e74c27b4fe5850929ba040dd382
92 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. It contains multiple embedded URLs pointing to external PDF files, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of multiple malicious-looking URLs is a strong indicator of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://blueseasmarinesurveys.com/uploads/1/3/0/5/130543402/zadawiraresalu_dujene_danusowe_xegej.pdf
    • http://nuclearoven.com/uploads/1/3/0/3/130324419/307d4f.pdf
    • http://ford-classc.com/uploads/1/3/0/6/130621555/lekumom_pofuwufixa_gugodelitigaz_zupanisix.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/4/130483447/130483447.html#movies+free++indian

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c3.bin
51ab9f3ecb6b5b0598f705d6f17df1db9331157d2467b3e762e6db4ed2d6d754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3 8872 bytes
font_01_sfnt_off00006edc.bin
72fbd1eda6256fe2abca66b4673265d4e3e4798d9ce6714e3daa20adcd05c4ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDC 6804 bytes

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