Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce99483a11ec9b4…

MALICIOUS

PDF

109.8 KB Authoring application: LibreOffice Draw
MD5: 6b5f9d1f25fc22ab36ad436b4d9da0c9 SHA-1: 2df1327229d652f0bb70980b7c1fa90065b77c29 SHA-256: 6ce99483a11ec9b437294273de7e485657e0319a25166eb602a3c27cba93461e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical detection for a PDF link farm and a ClamAV detection for phishing. The document contains a large number of embedded URLs pointing to external PDF files across various domains. While no scripts were explicitly extracted, the structure and the presence of numerous external links suggest an attempt to redirect users to potentially malicious content or for SEO manipulation purposes. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://lawrencepestpros.com/uploads/1/3/0/4/130476974/8925f11ad12f.pdf
    • http://katyandlincoln.com/uploads/1/3/0/6/130604509/bafudenezabo.pdf
    • http://dreamlandstudios.org/uploads/1/3/0/6/130639729/nuwakonaz_logorowigedukef.pdf
    • http://ololparish.org/uploads/1/3/0/2/130273982/e3f48b.pdf
    • http://allshortsuk.co.uk/uploads/1/3/0/6/130620430/2f81a52f2b08.pdf
    • http://patrickmcgeough.com/uploads/1/3/0/3/130313057/7271060.pdf
    • http://ninaalessandri.com/uploads/1/3/0/2/130273791/256364.pdf
    • http://gogotrain.eu/uploads/1/3/0/2/130289301/zivom.pdf
    • http://advance-it.net/uploads/1/3/0/6/130620604/130620604.html#simboluri+abateri+de+forma+si+pozitie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ef.bin
bd51c9d1b2f40b464521a6874567ae2b02e455711e93fb64d24f1500243892c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF 10356 bytes
font_01_sfnt_off000067c8.bin
70e84839c2a60a667a7313f4ffd8d99c7dcc4e5d7a1d8b9fc7a042d3ca842d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C8 2820 bytes

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