Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77ca9856c4f5b97…

MALICIOUS

PDF

34.4 KB Authoring application: OpenOffice Draw
MD5: cc8e0884a824c4e5bc6e71d025dc7300 SHA-1: a44222e9d2d0fd692367dc5c84dd7d0139a3b4c0 SHA-256: f77ca9856c4f5b97aca62d240816914f5de73608ff4379dca1ac66c7062e0710
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a phishing lure designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://newgaterva.com/uploads/1/3/0/2/130272080/d8792c223.pdf
    • http://theyarnbender.com/uploads/1/3/0/3/130379206/fokarimatisexas.pdf
    • http://mta-sts.mail.coaptcontrol.com/uploads/1/3/0/6/130639854/lubite-zugemi.pdf
    • http://schmittwoodworkingllc.com/uploads/1/3/0/5/130551696/c7eb9189b.pdf
    • http://snohomishdrivingrange.com/uploads/1/3/0/5/130545733/jobemozitomutopijupa.pdf
    • http://resurrectionoutdoors.com/uploads/1/3/0/7/130775228/8113621.pdf
    • http://chaosandcuteness.com/uploads/1/3/0/2/130272905/4551643.pdf
    • http://onlcf.net/uploads/1/3/0/6/130639124/viwevozafaginom-pejanuxomaze-gokumumew-gefof.pdf
    • http://elmhurstchildrenstheater.com/uploads/1/3/0/8/130814296/45a815f82.pdf
    • http://myuntoldpleasures.com/uploads/1/3/0/8/130874329/b660f493b.pdf
    • http://kimresine.ca/uploads/1/3/0/7/130776385/130776385.html#third+conditional+sentences+british+council

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e1.bin
cada77fcc89092368fd46827d72261d37ad3dac75f04a564f010dd1de4c18066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31E1 7400 bytes

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