Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7715e7b2f41ddf3…

MALICIOUS

PDF

43.9 KB Created: 2020-08-31 20:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aa99980bd87a93e9b83cc05a422b5b1 SHA-1: 05cb34685b084b0ebe8903349ca5d51b755c9cde SHA-256: d7715e7b2f41ddf3d0a5dc2a47471ccf5c70dce5855a4d0f1f1dbd66f3544fca
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is designed to lure users into downloading a fake application. It also features a link farm with numerous PDFs hosted on Shopify, likely for SEO manipulation to increase visibility. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.com/pify?keyword=cambridge+advanced+learner%2527+s+dictionary+pro+apk
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/denying_the_power_thereof.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/76717316421.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/cristianismo_puro_e_simples_download_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/73612381522.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/the_great_hunt_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/52056123737.pdf
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/21688819392.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77603652905.pdf
    • https://static.usrfiles.com/ugd/77941b_a76655cedd2b4126919025d7df9d7f51.pdf
    • https://static.usrfiles.com/ugd/cb4a18_551bd708ef24463881488d131c93b40d.pdf
    • https://static.usrfiles.com/ugd/e2b09b_8d836ee840a64972a79903bd8986fd3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_86b8e7b476734cdd85e02ed1c7314eeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a45e558f3324f9fa88b2b70a111708f.pdf
    • https://static.usrfiles.com/ugd/834936_0678f81b8466411e8c22e40dc4eb43ba.pdf
    • https://static.usrfiles.com/ugd/405339_a1430ce429604a35a2bfc631918012c5.pdf
    • https://static.usrfiles.com/ugd/a467d2_fccbfd0648404d8c9a5bb53b0c7448fb.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_off00006a9d.bin
82000ebc5ec81da67d13b3487d62187ebd0d7a4ad0fe6128504f5c4203d27e2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 5696 bytes
font_01_sfnt_off00007df7.bin
f9b0f9c8c348740ba5b7096cc40075fafa723ae1c9e06d683a86fbcaa8cfb85e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF7 10636 bytes