Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf80842a209d8d6…

MALICIOUS

PDF

37.9 KB Authoring application: Pdftk
MD5: 8ebe865626ddf6fdd282751bafdca51f SHA-1: 162cee5f49b089db107bb554167a33531bde282d SHA-256: 1bf80842a209d8d61b278a85331311c97405a4d5ef96bef53e731af58559d16c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of external links embedded within the document, a common technique for SEO poisoning and redirecting users to malicious websites. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather as a container for these links.

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://girlycrew.com/uploads/1/3/0/2/130272501/78acecebf2.pdf
    • http://miguelchanonafotografo.com/uploads/1/3/0/5/130539738/5604062.pdf
    • http://myjoepeezywear.com/uploads/1/3/0/3/130379479/87f131.pdf
    • http://thesingbabysingshow.com/uploads/1/3/0/7/130776754/130776754.html#sap+crystal+reports+2011+tutorial

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f6c.bin
6f6e25cb04a1ff486f8d405771c35c9eea46753b3f434359eaf024519ee56554		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C 7724 bytes

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