Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebad1a921d57d6d7…

MALICIOUS

PDF

55.3 KB Created: 2020-08-30 06:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f34df3e9ee1954fa32860544b29670 SHA-1: bdc425fb98f2b388e37b066c9851b94cb12d6ab8 SHA-256: ebad1a921d57d6d7009dfe91c1874f3da5649cd84a9a4b6692b3b8299f71db15
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=planeacion+de+formacion+civica+y+etica'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/cc03df_7e4171693e4f4799ba5dc23db2020774.pdf' being a prominent example. The document body, though heavily obfuscated, contains these URLs, suggesting the primary intent is to redirect the user to malicious infrastructure.

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.ru/wix?keyword=planeacion+de+formacion+civica+y+etica
    • https://static.usrfiles.com/ugd/cc03df_7e4171693e4f4799ba5dc23db2020774.pdf
    • https://static.usrfiles.com/ugd/b77b08_a0c5633e35994890862837ae8559a770.pdf
    • https://static.usrfiles.com/ugd/7c3584_3fb4f63d92af40588ce8f4e45ceacd6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20c8a843dca4c0fb47fb30996a38280.pdf
    • https://static.usrfiles.com/ugd/34ec99_bb618ea4aefb4dbc93854f8cf4a418e1.pdf
    • https://static.usrfiles.com/ugd/9e53d4_597a53179bf946858ca207d6bd8d1d08.pdf
    • https://static.usrfiles.com/ugd/87a178_e5f6d9672c4c46d197164e70082dd893.pdf
    • https://static.usrfiles.com/ugd/4dd980_07bec1b958904b2db3aa4413dc7c82c4.pdf
    • https://static.usrfiles.com/ugd/67f5f7_1e32328203e5435a8fe81f2d91da6da7.pdf
    • https://cdn.shopify.com/s/files/1/0461/3328/0921/files/vip_marathi_mp3_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4743/files/bolagidaxapejo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5076/0357/files/50141442469.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/opera_mini_beta_browser_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/4203/7150/files/wowugedon.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/ali_g_indahouse_full_movie.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_off0000976b.bin
812f6b32641a03342e3958dcaf702cd4db07aeecf88acc87e7cdc310da512a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x976B 5152 bytes
font_01_sfnt_off0000a8e0.bin
64423d0e6eb2b1ff6d3b7db25a4418c56eb86a2659b5a236e78233c48fda11bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8E0 11912 bytes

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