Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9df30039769f3a7…

MALICIOUS

PDF

46.2 KB Created: 2020-08-31 06:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bef52105ee0188eba17492851412829 SHA-1: 03da86d7fbf8b0c0233c45dfa463c6db95d0dda5 SHA-256: d9df30039769f3a71d29268cd312be55aa935f0df2cb13fb8b0eab8218c7b5c8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.com/wix?keyword=plants+vs+zombies+para+pc+full+espa%25C3%25B1', is designed to trick users into downloading potentially malicious content by appearing to offer popular software. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to various PDF documents, likely for SEO manipulation or to obscure the malicious redirector.

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.com/wix?keyword=plants+vs+zombies+para+pc+full+espa%25C3%25B1
    • https://static.usrfiles.com/ugd/0789d5_7e74d8b51b0c405c961028233cf3f871.pdf
    • https://static.usrfiles.com/ugd/455f95_375127f4db304e29bc62dc6512e71d99.pdf
    • https://static.usrfiles.com/ugd/314c35_eee66308889f46f58916e4359c97de23.pdf
    • https://static.usrfiles.com/ugd/b8c837_22a277fea62c494f8fa2f190366ff8c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_622fb092c81a4dcaa75e32c6b5e78e1a.pdf
    • https://cdn.shopify.com/s/files/1/0434/5066/3073/files/7445187415.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/glittering_generalities_propaganda_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/kuxezaluduba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/zigatojaverikujav.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/20504785938.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/23017305975.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/26105968774.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/rap_god_fast_part.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_465f040344f44189a5532533b0bbab13.pdf
    • https://static.usrfiles.com/ugd/bf0735_524543cc6b3b4786954e5400edeafc6a.pdf
    • https://static.usrfiles.com/ugd/e23fbb_27cc337332374ffb8b60c27c1aa7f883.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_off00006638.bin
d1c51c1e28a4c5f79c2a8bc135c3a21accc24803dda5b79997d7d254eef1b6c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 3312 bytes
font_01_sfnt_off000071fc.bin
20a6c25461ced561504840db958d85c4e3cf8a9c6da47d77c0c7c0e1e5383c09
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 5624 bytes
font_02_sfnt_off000084d0.bin
57a28d413dea6aa4a6f7a60862b48112b703d2379abac20eef1d3f8356e50908
pdf-font-stream PDF embedded font (sfnt) at offset 0x84D0 10728 bytes