Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7c4afad031e2c9…

MALICIOUS

PDF

41.0 KB Created: 2020-08-24 12:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3defabb51b2d4b2ce367dd0b399364bc SHA-1: cb7d11d19c9c3ccf1f5e2e182f8d46bd4039ccdd SHA-256: 4f7c4afad031e2c926c6107457238b0dda1fd5e6c526c6dbed13ec719e68691f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, including one pointing to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the text 'All new car games' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous Shopify-hosted PDF files indicates a link farm designed to improve SEO for the malicious redirector.

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=all+new+car+games
    • http://files.excellent-journey.com/uploads/1/3/2/7/132740536/jojev.pdf
    • http://povifi.manubio.com/uploads/1/3/0/9/130969336/jimabawi_mimisexexo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0907/9458/files/povoboma.pdf
    • https://cdn.shopify.com/s/files/1/0437/5307/8933/files/patikizosigotuwuzolazijej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/85596628511.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/xumuxufofufojozil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/landscaping_resume.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6827/files/ikea_bed_sheets_review.pdf
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/rixaludufoxala.pdf
    • https://cdn.shopify.com/s/files/1/0440/1646/8133/files/nedaxelanetagibumobowu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/35857068141.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/dinininivadajidaw.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_off000061cc.bin
fa493f23c35ffa58950b76d7b74ba2e48fe2235756b1af3acffdf80a8ec63cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 5200 bytes
font_01_sfnt_off00007371.bin
8bdfb9a23cd5c146f0216e9e5251bf23030bfa9881f7a61989343074c22fc219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7371 10600 bytes

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