Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e2e533f045363f…

MALICIOUS

PDF

41.2 KB Authoring application: Serif PagePlus
MD5: ecfdec56ef5b6fe8e182fb0b1af6127a SHA-1: 90da592dc442a7b5c31327f0b0e7ee4ad116650a SHA-256: a5e2e533f045363fe968b066f5caf69428fb2a7f52d5eda49d3fb7be7db69c46
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The primary attack pattern observed is the creation of a link farm to redirect users to potentially malicious content hosted on external domains.

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://dadsburgersstl.com/uploads/1/3/0/7/130740338/6797658.pdf
    • http://www.lamourexoticessentials.com/uploads/1/3/0/5/130547215/vobipunalozi.pdf
    • http://anxietyfreepregnancy.com/uploads/1/3/0/8/130814192/6911160.pdf
    • http://www.lovemorehealth.com/uploads/1/3/0/8/130813521/2072287.pdf
    • http://coffeetimenews.ca/uploads/1/3/0/6/130604779/3795212.pdf
    • http://nextlevelwellness.online/uploads/1/3/0/6/130639998/953259.pdf
    • http://jacksonholeskipackages.net/uploads/1/3/0/3/130313356/6833631.pdf
    • http://tunedinteacher.com/uploads/1/3/0/6/130620454/fupulimuboture-xijadikegogi-wixamogepiji-gonamatizumanux.pdf
    • http://cfhancock.org/uploads/1/3/0/2/130272577/098efa31.pdf
    • http://richardsonplumb.com/uploads/1/3/0/6/130639835/jenimak-wowijakeza.pdf
    • http://mirkamalmi.com/uploads/1/3/0/4/130490476/a31bed4875.pdf
    • http://dizacflowers.co.nz/uploads/1/3/0/7/130739970/gululir.pdf
    • http://troyandray.com/uploads/1/3/0/2/130291822/zuluzumog-vegewafonem.pdf
    • http://dissostich.us/uploads/1/3/0/5/130545128/6036853.pdf
    • http://cothrons.net/uploads/1/3/0/5/130545199/2385138.pdf
    • http://www.xmo1.com/uploads/1/3/0/4/130490410/130490410.html#julia+florida+barrios+partition

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004262.bin
f2f8cfaeb57211650b0c92ad6239283334b5252edfbdff5907329265c00ba8c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4262 9792 bytes

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