Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c409efe50ed9eec…

MALICIOUS

PDF

39.4 KB Created: 2020-08-29 06:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0497069064e52fcdafbc9e3604fdea7 SHA-1: 724183b75f2ca9d9f8d743cba23cf008d6c1b850 SHA-256: 8c409efe50ed9eec969e6adaebd6e9f3f972c250a0d397a1bd71727b0cc8959d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.ru, which is used to redirect users to potentially harmful content. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content through numerous links. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the link farm and malicious redirector strongly indicates a phishing or malware distribution attempt.

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=download+scarlet+blade
    • https://static.usrfiles.com/ugd/b8c837_d489e6abb2dc4a3fb588288346111492.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7ab7b7970844811aeeabe7b5dd323dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_012066c4100a4d72aa42819e8794940d.pdf
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/benubitazokosawinebujefo.pdf
    • https://cdn.shopify.com/s/files/1/0461/4301/3017/files/hp_photosmart_7525_printer_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad66316cd118405baa24261e50173a03.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8c60a7e52924ac494b06a0c2cdab01e.pdf
    • https://static.usrfiles.com/ugd/b8c837_114f6fa836b74e938d7a4e247ad61e08.pdf
    • https://static.usrfiles.com/ugd/b8c837_69fedcdc486e465ea37485c580571494.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb377fbcc0aa4913a95afa6f52839b05.pdf
    • https://static.usrfiles.com/ugd/b8c837_c74140e3b1914e63870d22d8e7cf02ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_bab90a2c16934972befaab0793c90418.pdf
    • https://static.usrfiles.com/ugd/b8c837_f63f109313354fb89dd52fbbf316bf90.pdf
    • https://static.usrfiles.com/ugd/b8c837_5af603cf1b27423fb4589565854699f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d634ed6aeeaf49be8eed2eb4a571ae6e.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_off00005d6a.bin
826084b4c2c65b8895a025c604b7435c2e2716167dd0c038116379f3428e7871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6A 5164 bytes
font_01_sfnt_off00006f1a.bin
8117e49681dc733cec76d9ce124d4c16fe5b3adb2796b0f7474ac15d59161dfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1A 9828 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.