Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0be5470c88c6bc…

MALICIOUS

PDF

47.4 KB Created: 2020-08-29 20:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6560862ea2cbc9f89389cd80d5359f39 SHA-1: 398d8c088f96d6360ec8cadce3123c2c1e703dc0 SHA-256: 2a0be5470c88c6bc05d19494685dffce4547fbeb14887fc3dc09a80914f5d7d5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=urge+surfing+handout+pdf', which is flagged as malicious. This suggests the primary purpose is to redirect the user to a harmful site. 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=urge+surfing+handout+pdf
    • https://static.usrfiles.com/ugd/b8c837_0c98e0e70f5b47a8b89258136dead7be.pdf
    • https://static.usrfiles.com/ugd/b8c837_69b21ff665ae4c409e69a998991bc73a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cb0c7f7e05c460f8636592472dbac9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_6496ba0ea7e0410296fce502a7dc1e01.pdf
    • https://cdn.shopify.com/s/files/1/0459/6210/0896/files/31386921853.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/dadobowolagisuvosag.pdf
    • https://static.usrfiles.com/ugd/dd4472_7d49a855979b4f50bd5abfd4f6862c72.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6158310df2f4a8096c6c1d960caf0ed.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/75102299585.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/xivezozufalamapagite.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_off00006dd0.bin
1fd9d6e90eef3cf2f0520eb1a1d822b83ef5097d7ae4fcf7267bb5b6cead7c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD0 5144 bytes
font_01_sfnt_off00007f48.bin
5de6d8b1c0e73901b7ace57b2d129c9d4a775f24c14f3b80a37a45a70602e240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F48 10420 bytes
font_02_sfnt_off0000a27a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA27A 4324 bytes

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