Malicious PDF — malware analysis report

Static analysis result for SHA-256 997749d732763cd0…

MALICIOUS

PDF

64.6 KB Authoring application: PDF Studio
MD5: 04a05793266daf74b20b5d36556a62d3 SHA-1: 406185b91fbc8d0e6a9f81a670a890748eaa6dca SHA-256: 997749d732763cd0b462ab8116e07f34f786a6d17cab26268310ad0030d8c4fe
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used for SEO poisoning or phishing. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The embedded URLs point to various domains, suggesting a link farm designed to distribute malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://cafecancunco.us/uploads/1/3/0/3/130379363/f3d796.pdf
    • http://mysoulsingsstudio.org/uploads/1/3/0/4/130476525/6206817.pdf
    • http://modernwhimsyevents.com/uploads/1/3/0/3/130324207/siwezaxugimilaxikeg.pdf
    • http://miracleinabucket.com/uploads/1/3/0/6/130620184/130620184.html#ilo+occupational+safety+and+health+convention+c155

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c4.bin
d008743d12fac5b735893d582eecef00772d63a9a56f6fe11bccc960f71e5ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4 8488 bytes
font_01_sfnt_off0000b860.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB860 16036 bytes

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