Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2d69d09413e194…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 18:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 685e0ed83a07d734665fb21f21f45a4b SHA-1: b83aad7061becebfd67dc432f29ecfe678bef257 SHA-256: 8c2d69d09413e194afaf5cb73eb6a8993cb43f62b98a43e527c2e0323c45a56f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, https://ttraff.ru/pify?keyword=bairavaa+songs++tamilrockers, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links indicates a coordinated effort to distribute 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=bairavaa+songs++tamilrockers
    • http://files.storyatradingco.com/uploads/1/3/1/3/131380944/befusebupezim.pdf
    • http://files.scalesexoticpets.com/uploads/1/3/1/3/131381078/9d5f03ec10c3ba.pdf
    • http://files.kaixuanengrg.com/uploads/1/3/1/8/131871659/1763368.pdf
    • https://cdn.shopify.com/s/files/1/0428/8882/2950/files/7053935401.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/70412521557.pdf
    • https://cdn.shopify.com/s/files/1/0438/9653/7243/files/50937450683.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/lefejunejok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/7418152096.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/kobovudokofexobalodagidux.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/84108063931.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/kaiser_permanente_mission_statement.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_off00005853.bin
8909a3e8c967f45b709f3df6ba99d63661e45a079cf9102a23e8ee26e6181443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5853 5292 bytes
font_01_sfnt_off00006a42.bin
eb954564e6fef6aa87a10cc373556ffbb52607d6e48b81da59ea042382431197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A42 14724 bytes

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