Malicious PDF — malware analysis report

Static analysis result for SHA-256 b914dc5799feec69…

MALICIOUS

PDF

42.6 KB Created: 2020-08-29 12:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47b4af3b579b17168384b1346b6ac2d4 SHA-1: f742065a8b46d0d134a21e3264e798cfd540f7e6 SHA-256: b914dc5799feec69ca57f758a4ea692c4be61a21bf5ae5b477b6a0398a150d9a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also fires for PDF_SEO_LINK_FARM, suggesting a large number of outbound links, with the primary malicious URL being ttraff.ru. The document body, though heavily corrupted, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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=san+expedito+quien+es
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/55704876708.pdf
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/46323429346.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/27853617790.pdf
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/42227052674.pdf
    • https://cdn.shopify.com/s/files/1/0431/3225/6422/files/easyanticheat_setup._exe_fortnite.pdf
    • https://static.usrfiles.com/ugd/5be868_a665a87fac32490099287e27afba432a.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc3bc6cf448b46d28de180040076090d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/33778324935.pdf
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/tumolikejapowipipedama.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/state_machine_in_c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee9db509fe3b41b8b98ae1688667e26e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6ed77a08ea746e39774dbfc7ea47fd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2107f59420e4d568e9b97a5aecfc079.pdf
    • https://static.usrfiles.com/ugd/b8c837_74fa95b602744448aa61b1252f47909b.pdf
    • https://static.usrfiles.com/ugd/b8c837_013f90c0e14d4036972e4cb464f4fd5b.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_off0000668e.bin
b270cad8e2d475ff9c5265737b7d2ed52fe3975e3cbd1ff1ab3fbfb8d81ede05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x668E 5124 bytes
font_01_sfnt_off00007805.bin
6d00af8e738ecdce3e976e8665ec5c59437383a0d1014ce3a1c01dce035cc8d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 11184 bytes

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