Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87fd712fc3d49a5…

MALICIOUS

PDF

43.3 KB Created: 2020-09-07 21:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d318aad6e0673198772fccbe0af174f SHA-1: 3560ca05d6f79bacd71df49d3e0fc98efc97ad6a SHA-256: e87fd712fc3d49a5adb62dc2572f7f8ecf10207b8c4bb54ab0304d382a9e9efa
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=walmart+camo+bed+sheets', which is likely intended to lead the user to malicious content. The presence of multiple links to static.usrfiles.com suggests an attempt to obscure the final destination.

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.me/wix?keyword=walmart+camo+bed+sheets
    • https://static.usrfiles.com/ugd/95b9ea_f228d9fcf0384370b149957a4271b5c4.pdf
    • https://static.usrfiles.com/ugd/6a22cb_0a3067f334d64a3db979908708749a29.pdf
    • https://static.usrfiles.com/ugd/85c99c_7edae456dec24264acd8d9ff010139e4.pdf
    • https://static.usrfiles.com/ugd/d2057d_d580f21e50f942d18cabd6e697249e87.pdf
    • https://static.usrfiles.com/ugd/b81754_e0727b7179cf40ebac70b7ac2e8197f9.pdf
    • https://static.usrfiles.com/ugd/5cf23b_55076a3b4cf84bef8e3ca4299310b34e.pdf
    • https://static.usrfiles.com/ugd/35dc59_1ffa28df89a1418da96fe926360063f7.pdf
    • https://static.usrfiles.com/ugd/41a0b6_7e67341131ee4960a8404fa68463fc20.pdf
    • https://cdn.shopify.com/s/files/1/0435/4297/0527/files/xetunepipeji.pdf
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/gibajogaretovenebekifa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/hello_brother_film_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/6746/5890/files/baby_sleeping_bag_guide_nhs.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/73991992565.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_off00005e9c.bin
a744d5509accd963ed92dbb782f0cb03f0bb16f1715a9905bc3fa170e327b9df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9C 4964 bytes
font_01_sfnt_off00006f78.bin
b726abaea4bb4e521ffbaef90cc85422b5ca13aa2d2588f4037bff011ee78845		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F78 10328 bytes
font_02_sfnt_off000092e0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E0 4324 bytes

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