Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba3c52dc017c6738…

MALICIOUS

PDF

46.9 KB Created: 2020-08-29 22:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44bfffa83c77e5f78eff3baba9d014df SHA-1: ca104427b22558123ed7c57cee8eea653482aae3 SHA-256: ba3c52dc017c6738d4950b11b3c2e84aeb652ae483f3bafaeda0aef7d1d12a85
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a URL that is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=spongebob+something+smells+bossy+boots', suggesting a lure to a malicious site. The presence of numerous other PDF links indicates a link farm or redirection strategy.

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.com/wix?keyword=spongebob+something+smells+bossy+boots
    • https://static.usrfiles.com/ugd/b8c837_d219fdc08f494ef79aaf6cce830f7a07.pdf
    • https://static.usrfiles.com/ugd/b8c837_38708ea07c0845c2a202dda7ae14a2e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_42babdca9aaf46119728127832fd6374.pdf
    • https://static.usrfiles.com/ugd/b8c837_73a997d589bb4aad9a06a1fbfdf871ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f6068acbefa42d9a9039bad35eae4bf.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/46371405235.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7247/files/crystalline_and_amorphous_forms_of_silica.pdf
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/carpentry_and_joinery_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/asco_gu_2019_poster_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/jazovawenawanafeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/bibi_fatima_ki_kahani.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/bitencourt_direito_penal_parte_especial_3.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/fewesawuguzoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/59419517375.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/
    • https://cdn.shopify.com/s/files/1/0429/3397/7247/files/crystalline_a

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5c.bin
58dc9e701485cf60dfd7907309ac6ca824f103bb51c2f9905e47a74fb04644c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 5060 bytes
font_01_sfnt_off00007d63.bin
43291dabb2de0cea12363d9b3fbcb947e7f46c997f568a12c22095d954b71177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D63 10192 bytes
font_02_sfnt_off0000a044.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA044 4324 bytes

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