Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba009feefa0515c7…

MALICIOUS

PDF

40.9 KB Created: 2020-08-28 19:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38c0fe1bd07d6b38038108e31f2d4a79 SHA-1: c1de1610360e00ef0649fff5ce72a51c5b417e84 SHA-256: ba009feefa0515c70c16fcfb2201832235463f36faf8502d331abde5a7c72f95
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=hidruro+de+rubidio'. Additionally, a high-risk heuristic indicates a lure for remote support tools, suggesting the document's intent is to trick the user into installing such software. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for obfuscation or distribution.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=hidruro+de+rubidio
    • https://static.usrfiles.com/ugd/b8c837_38281d21d2b74252840743180cf1cba7.pdf
    • https://static.usrfiles.com/ugd/b8c837_aaf9192b759d4957b97fc0fac42a4e34.pdf
    • https://static.usrfiles.com/ugd/b8c837_b224d8e76dea45cda904ec41700dd946.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/teamviewer_14_msi_wrapper.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/cossacks_game_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0440/8855/7718/files/morrowind_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89832202682.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/vewobisapowodur.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/jupawosalusimovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/61765083852.pdf
    • https://static.usrfiles.com/ugd/b8c837_82eff5da619c43febc61b3dbc129ae41.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c28722ba0fb4ef7952034c59dc9e030.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fbb7c673101445893d7852fea85c092.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_off000061bd.bin
37024191a3bc8aaf3f29c8ce0b1f6e9b303ce4d48ed88c4eaef076a62e49d608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 4500 bytes
font_01_sfnt_off0000710c.bin
aed37a8ea0eebb1c8d3551f2307fcd1659fe8b34f38d4eabe3986c476c189786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 11376 bytes

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