Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2e5d00d1c34a6d…

MALICIOUS

PDF

53.9 KB Created: 2020-08-30 13:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523f8e76cb01480e6274ae396176e576 SHA-1: ab3095d8511d5a9fcec46901dfc83963aad7f15d SHA-256: 9a2e5d00d1c34a6dc733b0c6861556e5f213ded4006c8dfbbb6665f5aab0acd7
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, specifically pointing to a URL designed to look like a search result for a specific product. This URL is the primary IOC. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the same malicious URL and other benign-looking PDF links.

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=sony+dvd+remote+rmt-d197a+tv+codes
    • https://cdn.shopify.com/s/files/1/0436/0614/7229/files/wilomeranuzipezukub.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/nofirubegaleva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/gixubelosenujawazan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zavokalozetaxolemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/sogufop.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fb24b56143f48fe9235d6d03ba7d6b2.pdf
    • https://static.usrfiles.com/ugd/87a178_339c392079c640698db36f0bd85ff69e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ec6d297e704478185c5fe80a8a2027b.pdf
    • https://static.usrfiles.com/ugd/0adedf_fddba5cf6851415daa2c089d8c1f66fd.pdf
    • https://static.usrfiles.com/ugd/4c1554_096cfe2022464657bf2e82d28dfe5aac.pdf
    • https://static.usrfiles.com/ugd/b8c837_64f0dd99f05a4b548b776fd9b4b409ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc4ab14617c14f5c97f5d358f46dbd76.pdf
    • https://static.usrfiles.com/ugd/01bc73_021af46724594b1f8a11d6657a2dddcd.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/koravolim.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/pathfinder_advanced_race.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_off00007a2a.bin
9932a4f9fa189b1db7da3a40c622ae8fb9c5dbb386a74af5a161e1b91d3f57f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2A 5376 bytes
font_01_sfnt_off00008c6c.bin
220d818ed5fdda82f09d5bf153f996ba226e55b43598098acb6495bae523ca72
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6C 15404 bytes
font_02_sfnt_off0000bc22.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC22 4324 bytes