Malicious PDF — malware analysis report

Static analysis result for SHA-256 20121ad77b5cab3c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 07:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a35d5a3971f8ebde66928e53f50b049d SHA-1: aea50f36db378d0f3adb8398f757a54f549a8548 SHA-256: 20121ad77b5cab3ce8a5383018f3186c1be4bd7bb62715b8fc3d256c36449388
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL and other links that appear to be part of a link farm designed to improve search engine ranking for the malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=disney+beauty+and+the+beast+jr+musical+script+pdf, which is used to redirect the user to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=disney+beauty+and+the+beast+jr+musical+script+pdf
    • http://files.creativelyyourscustomcakes.com/uploads/1/3/1/1/131164569/23065cb4.pdf
    • http://files.iguanamercenary.com/uploads/1/3/1/0/131070452/500861.pdf
    • http://files.sweetart.online/uploads/1/3/2/6/132696483/kolaj.pdf
    • http://files.artworkbyrenee.com/uploads/1/3/2/7/132740620/kixojiroje.pdf
    • http://files.kinkysalonnola.com/uploads/1/3/1/6/131606261/2832065.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/business_cards_vistaprint.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/box_behnken_design.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/devoreguzinikenukawerapu.pdf
    • https://cdn.shopify.com/s/files/1/0443/0187/7404/files/basketball_court_dimensions_in_feet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/8601755288.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/28529909959.pdf
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/bumudijaburigolijinorebav.pdf
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/lufufokupilivibamulunofan.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/vovigowudexudexebedus.pdf
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/16334150782.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/66661479443.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd4.bin
2200e2f6374c931fe33c0baddf286901fde18eeb4ce356e7b55b48577a695ecc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD4 5712 bytes
font_01_sfnt_off00007327.bin
7a35c3d983b21281d72f99f3ecb8b0eac7720aa23f9dc3a393ce702c4a7ad03a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 9948 bytes