Malicious PDF — malware analysis report

Static analysis result for SHA-256 d205154719f6ed71…

MALICIOUS

PDF

39.9 KB Created: 2020-08-29 09:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91c63327e69fcc3f10a4a6794938957b SHA-1: 1cb7c5a077cce97469b7689a7cb66e695d1e6783 SHA-256: d205154719f6ed71238ee0a057ef1e54e95d9599054c5f513e3f21b3c3e76e1b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to disguise malicious intent. The primary malicious URL is https://ttraff.com/wix?keyword=skyway+car+service+queens+ny, which is likely used to redirect users to further malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious activity.

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=skyway+car+service+queens+ny
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/babylonian_number_system.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/avid_disc_brakes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/sitemibamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/47636910077.pdf
    • https://cdn.shopify.com/s/files/1/0429/2788/2407/files/7140049095.pdf
    • https://cdn.shopify.com/s/files/1/0433/4803/3689/files/madamevunutoliporex.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89788869c5943fcbffa2295ffcc492d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c69a25be5569414c8ca8b10054670f96.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1ad8d22bab4721939337d1cfb05990.pdf
    • https://static.usrfiles.com/ugd/b8c837_82e7172a0bf74101bacf9ee8668995b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_955193f177cb47a8b3e45262bbd0bbda.pdf
    • https://cdn.shopify.com/s/files/1/0438/8972/1496/files/warner_bros_studio_tour_get_your_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/student_council_speeches_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/60942011153.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_off00005d48.bin
9bafa6eedb742706ac36e40a91322e86457afbb3facf44b6bf5e55f63df46c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D48 5308 bytes
font_01_sfnt_off00006f80.bin
06c9d70965b7293a4d256a450996c209a7ec672e5390a96920037f2f1e922754
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F80 10412 bytes