Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6800c138c4a611…

MALICIOUS

PDF

37.0 KB Created: 2020-08-29 11:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f23a6bd5be4fb69722dd083e80cb6cd SHA-1: ac8e151d9a8f8b9de8e4f6f08a61c8d477244bf2 SHA-256: 2a6800c138c4a6119089189a5f4975c6aa95c261e75b7a0fd5f27cfaca22c97a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body disguised as a movie download. This link, https://ttraff.cc/wix?keyword=premam+movie+in+tamil+dubbed+download, is the primary indicator of malicious activity. The file also exhibits characteristics of a link farm, with numerous external PDF links, though most resolve to benign 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.cc/wix?keyword=premam+movie+in+tamil+dubbed+download
    • https://static.usrfiles.com/ugd/b8c837_342b465ca8d741a7bccbb3cb0d096842.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbb9340923b44f92a3543ff354bcf2fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_2980f03b62a040bf9d78b0240be816ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_be0ec9187d7547169cc924ad384d5531.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f3280a7840346168bfa1539943b65ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_34b50b827e3f437b9d9bbf6ab7b54bb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fd75b0f258c4480997355246fef35fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_a309032ba28d4d289b36c7be125dabd7.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/entrepreneurship_and_business_management_n6_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/pagogebesisanobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/lds_gospel_library.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/64417653995.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/kenwood_ts-_430s.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/62873659142.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/67527473682.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/35107478422.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/arranging_sentences_in_logical_order_worksheets.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_off0000510d.bin
e5594e0c24e269451c988c7b65f115982268ef6d6f0f1fa5117298e5fcd1e5a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x510D 5088 bytes
font_01_sfnt_off00006248.bin
2ab219739aef0cc006f6fc35c50239b875985ea70478f4d98fe1a99e48308fc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6248 10860 bytes

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