Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cec24de26e1d37a…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 03:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c3fbfec6aef4d6ccb3f23e5ced55c68 SHA-1: aeddc3680c83ac7a421cb93756aecaffd76747f1 SHA-256: 2cec24de26e1d37a911368e28db2e387f698a31ecd66a2aaaa9ae54882ffe461
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=need+for+speed+2015+car+list'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO-based distribution effort. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=need+for+speed+2015+car+list
    • https://static.usrfiles.com/ugd/b8c837_4a0d3bf25dd049388d06aee2dfef8673.pdf
    • https://static.usrfiles.com/ugd/61804c_237dc1da91fa491a9d27f00af1334cd6.pdf
    • https://static.usrfiles.com/ugd/7ff653_957730256a824a11933ac03e821be7d0.pdf
    • https://static.usrfiles.com/ugd/565485_bdcf3001646348bbba11e30a1cfcaae5.pdf
    • https://static.usrfiles.com/ugd/23e9be_f958620a575f4337b93bd4cb0454102e.pdf
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/63430367381.pdf
    • https://static.usrfiles.com/ugd/162fe6_0ae472f1345e45a68d3b6278abbf9791.pdf
    • https://static.usrfiles.com/ugd/868401_02b7949e42db41b8b734b9698b84aa7c.pdf
    • https://static.usrfiles.com/ugd/d2751c_3518fc33834f4d20a8b6a42f6e881ce5.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_50b9b74d26fb462489d1c43f5b677d65.pdf
    • https://static.usrfiles.com/ugd/850f07_2d50e7f9e22d462998d48dc0f4bd7247.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/vanilmirth_leveling_guide_talonro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9141/1615/files/zajewe.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_off00005d74.bin
e7337a5536ec19f85cd4f00e4347efa5cad9da092a049202f74afeae60d6a1b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 5568 bytes
font_01_sfnt_off0000707f.bin
65081cdc2e01c060fb4522a2278890d36251a979708a0745c46f0b53488023f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707F 14224 bytes

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