Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9373d1b6df47bb…

MALICIOUS

PDF

33.9 KB Authoring application: PDFBox
MD5: bac03991e052334ea58de1dca21bdad7 SHA-1: b04ae97672914a134a2dfe010adc0d613186abf6 SHA-256: 2f9373d1b6df47bb6718dee2cb93c22958dc114cb337cbf0e7377119171ea8a3
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains, indicating a link farm designed to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support its malicious nature. The embedded URLs are likely used to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://milwaukeesfavoritedj.com/uploads/1/3/0/6/130604314/mizilepiza.pdf
    • http://kngproduction.com/uploads/1/3/0/3/130323425/5386073.pdf
    • http://www.tlkeyartistry.com/uploads/1/3/0/6/130639284/simad-letogefugokep.pdf
    • http://mrhandgun.com/uploads/1/3/0/7/130776314/jegofexezize_zivofesinir_medir_bufexuxuwolizud.pdf
    • http://jinbaobogunqiu.br3h.com/uploads/1/3/0/6/130605492/6785101.pdf
    • http://bikeeny.shop/uploads/1/3/0/6/130603832/xudejusa.pdf
    • http://acwri.org/uploads/1/3/0/7/130739289/ximuwajunitumubuw.pdf
    • http://disneyworldvacationrentalthemadhatter.com/uploads/1/3/0/7/130775027/735ad106c95fc4.pdf
    • http://www.cherylgrayfineart.com/uploads/1/3/0/5/130543537/towozi-rofiburesej-lefixo.pdf
    • http://quietcreature.com/uploads/1/3/0/6/130639227/lorix-jusuze-regemuki.pdf
    • http://lisaungerbuehler.com/uploads/1/3/0/6/130603913/130603913.html#compare+unitary+and+central+air+conditioning+system

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e83.bin
d0d0b2f91dc2aeffeb9d74ff407afdf823b87d1bf65a5f3762a3fda8f9a38f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E83 7756 bytes

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