Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecaa5a8ee8dfcd28…

MALICIOUS

PDF

39.8 KB Created: 2020-09-02 08:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed407645aff8b763da5f4be95afa3038 SHA-1: 997cb1c1ad057b967e1bf8d5157c56a12d6ea5b4 SHA-256: ecaa5a8ee8dfcd288cb36b0810c0e1e969bb406abbaedd11935fe52499fefaa2
162 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, with one identified as a malicious redirector. The document also exhibits characteristics of a link farm, potentially used for SEO manipulation. Furthermore, it includes a lure for remote support tools, suggesting an attempt to gain unauthorized access. The presence of these elements indicates a malicious intent to redirect users to harmful sites or trick them into installing remote access software.

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=greenhouse+effect+powerpoint
    • https://static.usrfiles.com/ugd/55e2c6_518a6fa380874eb7a4eb3007517e6893.pdf
    • https://static.usrfiles.com/ugd/2eedf1_4cfc3dca132d4894afb79e8d9315e3f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_557249ec494e4881a9f2d85c22145eb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_f799a9d80fbb45e8975088f6cd2f7cae.pdf
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/varivaroxusivajerumej.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/dune_david_lynch_tlcharger.pdf
    • https://cdn.shopify.com/s/files/1/0431/9087/8372/files/73735651890.pdf
    • https://cdn.shopify.com/s/files/1/0440/3537/5254/files/free_apple_itunes_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/ancient_egyptian_language_dictionary.pdf
    • https://static.usrfiles.com/ugd/b8c837_f48536f7208c499baacd5fd2431ace0c.pdf
    • https://static.usrfiles.com/ugd/5438e3_69a178212c5549a38efffdd1e110331b.pdf
    • https://static.usrfiles.com/ugd/b8c837_052f2125847e49058c83956fdea2c9cd.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_off00005fc3.bin
00668d1cbae561996cfb5d3a6bd0d715fa6f709f9a29ae1bd2f0b2cab2311301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC3 4984 bytes
font_01_sfnt_off000070d0.bin
f822c14bb7207421985fadd864fcbf4af5b7f3a50ca3e6fd1da20a2f4144f3e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D0 10060 bytes

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