Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0caedfa08bce3d6…

MALICIOUS

PDF

50.9 KB Created: 2020-08-02 17:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68dffe55461521affd4f3fe8cc65749f SHA-1: 857ec5e864e299c99c2f37ad28389e66add36c2e SHA-256: c0caedfa08bce3d6d9ffb91da6f3bb0cdba96e80d33ffb48f8304b235040994e
120 Risk Score

Malware Insights

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

The PDF file contains numerous links to external resources, masquerading as 'simple java game codes'. One of these links, 'https://ttraff.ru/pify?keyword=simple+java+game+codes', points to known malicious redirector infrastructure. The document body is heavily obfuscated but contains this URL and other PDF links, suggesting a link farm or redirection tactic to lead users to malicious content.

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.ru/pify?keyword=simple+java+game+codes
    • http://files.twelvelittletales.com/uploads/1/3/1/6/131606343/kowezomelo_tometunor_fuzusularelijo.pdf
    • http://files.thriveatwork.com/uploads/1/3/1/4/131453221/kewifan.pdf
    • http://files.dianarobles.ca/uploads/1/3/0/7/130739120/3762790.pdf
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdf
    • http://files.sparkfoundationinc.org/uploads/1/3/1/4/131453097/b9ec80b5983631.pdf
    • https://cdn.shopify.com/s/files/1/0435/5257/1555/files/84406857056.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/larilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/99895907915.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2533/files/72499177727.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/zuzovuraselitem.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/8106393467.pdf
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/xejimenisikori.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/84970555623.pdf
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/xezitorirepuvereresadot.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/i_m_bringing_sexy_back_lyrics.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_off00007c8b.bin
f1c1e5274f95a34accb3ddf38c5445c1bb38f1b7a8304523b4cc2c7bd7915068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8B 5536 bytes
font_01_sfnt_off00008f59.bin
b426665eb09e474bf696a804074a1b1aec1bf69c72b4926cfbe8d520255501ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F59 14932 bytes

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