Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac86f607f10011ca…

MALICIOUS

PDF

41.7 KB Authoring application: PDF Studio
MD5: 0e50754a0572b0d66d124c96a95adbb9 SHA-1: 785210e5c00a437d1d58ac52648a0adb9e767205 SHA-256: ac86f607f10011ca8b323b842290eb0f72204f6ea5b1cb1ff51612e44a7ed81a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted, limiting the analysis of direct execution behaviors.

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://bangkokpropertymanagement.com/uploads/1/3/0/3/130312925/09616d540.pdf
    • http://townofclermont.com/uploads/1/3/0/3/130312912/4266299.pdf
    • http://nsanegriplegendcarscom.com/uploads/1/3/0/5/130590507/6896074.pdf
    • http://uwhqsc.org/uploads/1/3/0/5/130551378/xezopuzinube-bijogudewirid-lizuvoxape-rigakagibira.pdf
    • http://desnelty.tech/uploads/2020/01/28/0bafba8c65.pdf
    • http://politicalresearch.net/uploads/1/3/0/2/130287883/7616b8b434ced.pdf
    • http://brite-technology.net/uploads/1/3/0/4/130483606/3d0d1133f10.pdf
    • http://tmpropertysolutions.com/uploads/1/3/0/3/130323199/vamunugabedukol.pdf
    • http://moisescastro.com/uploads/1/3/0/5/130540026/13e774d032e981a.pdf
    • http://myhralacarte.com/uploads/1/3/0/2/130271085/7788620.pdf
    • http://chooseyourfamilyadventures.com/uploads/1/3/0/4/130492038/puwoloxod-jawetatezeg.pdf
    • http://nobuhotelmarbella.devsite-1.com/uploads/1/3/0/6/130621277/130621277.html#texas+special+education+corrective+action+plan

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001502.bin
ba58255f949df6503f25ab6a2614caa7467d2a62d733e893f878ec0539739daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1502 9212 bytes

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