Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c95f934ea2f0b4a…

MALICIOUS

PDF

58.0 KB Created: 2020-08-30 19:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bb8433d7ec10c374400c0636a639137 SHA-1: 1c360e12e8893820fc5da3e1ab2c5ea890367726 SHA-256: 1c95f934ea2f0b4a7ca9f071f07806623649667913e600a0f8b1c11969149ab7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=usa+today+ashley+judd', which is flagged as malicious. This suggests the document's purpose is to redirect 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.com/wix?keyword=usa+today+ashley+judd
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/4._3_practice_congruent_triangles_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/17513073583.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/taxaxagaxefabotokuwuwaziw.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a48830810ed4c32a71d3450ff964d25.pdf
    • https://static.usrfiles.com/ugd/4b68be_b6f29d43435d411bb1295b6130226764.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/93057008425.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/celtic_gods_and_goddesses_information.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/21974050793.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/rapemulodisajo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1924/5467/files/wow_classic_rogue_lockpicking_guide_horde.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/android_instant_apps_auto.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/43299167101.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009899.bin
5184fe444279ccb1e70665f59cbd5cd7f4130034ae97093a340e329811d6b404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9899 4716 bytes
font_01_sfnt_off0000a8b8.bin
22647cd112804ea55b55137077b1bba75133d5a534907d9072b6c593ead59140		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B8 10564 bytes
font_02_sfnt_off0000ccd6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD6 4324 bytes

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