Malicious PDF — malware analysis report

Static analysis result for SHA-256 80aa64f4d7b30ec0…

MALICIOUS

PDF

72.4 KB Authoring application: OpenOffice.org
MD5: c91053c547bf60f3c11e4c86b00e85ab SHA-1: b2d7d66e799c89c9b3048386a77deb62b969c538 SHA-256: 80aa64f4d7b30ec0db1700c5b90f6bfec64d4ead9b46d1916c0a4dabde33be19
150 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, pointing to other PDF files. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The embedded URLs are likely part of a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://0101001101001011.com/uploads/1/3/0/5/130590029/fudilovax.pdf
    • http://coachparent.com/uploads/1/3/0/6/130604289/6645298.pdf
    • http://newstreetsolutions.com/uploads/1/3/0/2/130271072/bijiladekimam.pdf
    • http://practicaaudaz.com/uploads/1/3/0/4/130436521/7270811.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/6/130639454/130639454.html#gerald+r+ford+carrier

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000126a.bin
a518a6aac13cd442de4fb88e99bbaa48a116bc411abb9a51821d32d8193c147c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126A 9376 bytes

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