Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1d360fadae8e1e…

MALICIOUS

PDF

52.8 KB Created: 2020-08-31 06:18:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99088751083d243ec32d8291d6062dc3 SHA-1: 23caaf4f133b503969498096c0a0038ed5f0be6b SHA-256: fe1d360fadae8e1eef781c639d0862e322dae25b85c8a31314c2fe232442b51c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter

The PDF contains a lure instructing the user to copy and paste content into a shell, which is a common technique for executing malicious commands. It also contains a link to a redirector URL, 'https://ttraff.ru/wix?keyword=linux+commands+for+hacking+pdf', which likely leads to a malicious payload. The document also hosts a large number of links to external PDFs, suggesting a link farm for SEO poisoning or to distribute further malicious content.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=linux+commands+for+hacking+pdf
    • https://static.usrfiles.com/ugd/b8c837_dd9d5ca1546f425fb01233295b19e73b.pdf
    • https://static.usrfiles.com/ugd/b8c837_80cac8eeca774c5aaaac7f0051ac1ef8.pdf
    • https://static.usrfiles.com/ugd/735189_cbacfbb0329b423eb8496092cbf99441.pdf
    • https://static.usrfiles.com/ugd/77d535_8851ee2a7f1f4242a2e32db51bdd7536.pdf
    • https://static.usrfiles.com/ugd/b48b60_968ce46ab5264233969d2ed1735009a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9cc06c6fb374e959498cb5485af8591.pdf
    • https://static.usrfiles.com/ugd/b8c837_b832b9a38e744de4ad2ae6d6bb618ed0.pdf
    • https://static.usrfiles.com/ugd/79cb75_f8836c1e7b764ea99b9069c7a9adc08c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1a2616025d9416284fe3cfa05166b48.pdf
    • https://static.usrfiles.com/ugd/8e1900_30ec935f8fc94514be8774029c507d1b.pdf
    • https://static.usrfiles.com/ugd/906e9f_e2c676ec11154d37b2382f924d6ec8c1.pdf
    • https://static.usrfiles.com/ugd/4bb894_3909a1091a2d4703997eedfae65ecac4.pdf
    • https://cdn.shopify.com/s/files/1/0440/8400/2981/files/chamatkar_1992_movie_free_dvdrip.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/18669285064.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/16707001429.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/mla_works_cited_file.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_off000075a6.bin
f6236c4fe3b842ef8ebb6298a6615062451e6eb1cb4395f3347510269668fae1
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A6 5612 bytes
font_01_sfnt_off00008895.bin
5860644b39419eed87041bdb38f4cf2cd0a9d00b4efd775fa9725abf3dc41256
pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 10592 bytes
font_02_sfnt_off0000acfb.bin
c4034ed54e4da6294762c43638f43b0b7ab0d43d1d5fc7e5a22976bc9db277ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xACFB 17156 bytes