Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e60f066eca0346…

MALICIOUS

PDF

59.0 KB Created: 2020-09-07 00:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1705157700a7c7b56cb8035a18d24661 SHA-1: 5c93fdcc65f466c907667a78d4ae94c7301ab623 SHA-256: e4e60f066eca0346dcc44d317ce2dd70b92feaf83bf06fab1ac4c2fc80aefce4
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though partially corrupted, contains text related to 'Madras university old question papers with answers' and a call-to-action phrase, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify and static.usrfiles.com domains, likely to improve SEO for the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=madras+university+old+question+papers+with+answers
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/81856416202.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/jiwirobemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/metukuwuligurepowefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/pizuredegixipakalabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7602/6522/files/gofumujuxizesizurirelixis.pdf
    • https://static.usrfiles.com/ugd/ed2d23_07f9431d08c14466824dfdd3e134c633.pdf
    • https://static.usrfiles.com/ugd/838e7e_e590f0f304c34ddc99c01901d038c4d9.pdf
    • https://static.usrfiles.com/ugd/a3b54b_3514c70238904ef49fb75b64daed8896.pdf
    • https://static.usrfiles.com/ugd/3aca14_6d9ae0ce6d36454899cbffd6768c1fb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4a474de23234ad19ff6efe174bdf19a.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_2aab2466211641009bc6b4d9bfe88a2d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c45bc9d1bf74eeaaa4d98877f68e436.pdf
    • https://static.usrfiles.com/ugd/599f1c_e75c142372444b69ae0f999dbd57c826.pdf
    • https://static.usrfiles.com/ugd/74a852_77282fed288949f9b3191c4c061d4958.pdf
    • https://static.usrfiles.com/ugd/c3f59f_83f506f1defe4557845bff5e9f63a04a.pdf
    • https://static.usrfiles.com/ugd/a58b01_47ec697c4ac84dc2b6f03f39ce14acb2.pdf
    • https://static.usrfiles.com/ugd/8aba0c_fd54d3bbf11e47478650103addfa5a4f.pdf
    • https://static.usrfiles.com/ugd/2813e2_828623b65a50406897a3bcd29231666e.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_ce66d1f3eebe4dd78d9fa00bf13a629c.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007ed4.bin
2f6c65b71b5722dd5e0af1caf1a35ec17856c3c14b0aa43c2f90375015d387a5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7ED4 14160 bytes
font_00_sfnt_off00006c3e.bin
1c35bde2c6716b5ea338fe593ab44f0f2c4fb26704fb2c604c11bd3e4f43f77d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3E 5432 bytes
font_02_sfnt_off0000a164.bin
af6b39bfb71181fbc03b462c42dd9730a5511dbc34532408af5748c3874e738f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA164 10116 bytes
font_03_sfnt_off0000c40d.bin
3e1c6b2f9da18257e221c7eaf1c5ef7146d364369bc421cb543ce1f1a0fa10df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC40D 17516 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.