Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4a6c76a8e7d1f4e…

MALICIOUS

PDF

60.5 KB Created: 2020-08-30 17:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54407c5999e453442314c98b1c177bea SHA-1: da25f48053ae79640e7362b6814c8d6e0277604c SHA-256: c4a6c76a8e7d1f4e902231fa11b4bde573f4bbc6e715953db3a600590baff75a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/wix?keyword=minecraft+ev+e%25C5%259Fyalar%25C4%25B1+modu+1.7+10+in'. The document body, though heavily obfuscated, contains text related to Minecraft mods and the URL itself, suggesting a lure to trick users into downloading malicious content. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm designed for SEO poisoning to attract unsuspecting users.

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=minecraft+ev+e%25C5%259Fyalar%25C4%25B1+modu+1.7+10+in
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/gidab.pdf
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/viputejoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/how_to_install_an_apk_on_bluestacks.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/2987146607.pdf
    • https://static.usrfiles.com/ugd/9219f8_08a4fe42b5b043c7ba5f347890f0f5cc.pdf
    • https://static.usrfiles.com/ugd/67e251_c7bf0b8288ba49c68d07689e5263476f.pdf
    • https://static.usrfiles.com/ugd/b8c837_be3b6c19ec5842778bde5634da6edbf4.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_7728c34457e547df868d6df551216e6b.pdf
    • https://static.usrfiles.com/ugd/a91264_4ee8a6134e474bb281aa28d7abf8f3ed.pdf
    • https://static.usrfiles.com/ugd/c0b427_8865b8b7959c430bb3bd17c8033f8d36.pdf
    • https://static.usrfiles.com/ugd/be19e1_41ea54d7fb8d42389395a6e58136fa7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_62efa845e940446e88105a7eda97732d.pdf
    • https://static.usrfiles.com/ugd/0a052f_14422aa3b7f845c8854db66dfe1a37f4.pdf
    • https://static.usrfiles.com/ugd/0c41e7_8f1ff589178e41d796f8a1ccd980227a.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_off0000a741.bin
3720265c8e53927f7fbd1e66b8778c064f1f32ea54d8a48451fc414e8a321a09
pdf-font-stream PDF embedded font (sfnt) at offset 0xA741 5740 bytes
font_01_sfnt_off0000baca.bin
c57107952cb8f18ecec89a6a325c9c6dc30fae11fd5180bc4a2a7872c59ef9f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xBACA 12616 bytes