Malicious PDF — malware analysis report

Static analysis result for SHA-256 b043a47fe6166d9c…

MALICIOUS

PDF

71.4 KB Created: 2020-08-29 02:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42b568c89dd9f5cad0f5c04c0406f66f SHA-1: c56cc44385067618cb02ab5253252780882fe0c6 SHA-256: b043a47fe6166d9c3b3cb47a1e8134123af00164cf634729cd903a4f9eb134f0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wix?keyword=free+beastyality+downloads', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL, suggesting the primary purpose is to lure users to this malicious site. No scripts were extracted, and the file type is PDF.

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=free+beastyality+downloads
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/28262776431.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/69476260374.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/astra_international_tbk_annual_report.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdcfd85f4cf94ac19686e48e7022ee2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_19d9407701564c2891419850f091e039.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a65298334da4510b6ed68a339334389.pdf
    • https://static.usrfiles.com/ugd/b8c837_d946a00d414141e79af84fb08e1ae5de.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5159d6418e94aa29d2a13a5ee204029.pdf
    • https://static.usrfiles.com/ugd/b8c837_4022bbd8e7c646d1a67575f1a7aa3b96.pdf
    • https://static.usrfiles.com/ugd/b8c837_7985001c949a49b68089b4e81d4ed02d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e981f0564dc942ea90d5373a1c1608a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_83065d9ecf9b4092bf1dee369d265a87.pdf
    • https://static.usrfiles.com/ugd/b8c837_1392575240b14d89a4cb768ed99e1fc9.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_off0000cdd7.bin
96cb363c19baf05ae56b2d8f60b31926c1301860e8225505d2432d1b21d1843b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD7 4896 bytes
font_01_sfnt_off0000de95.bin
6628831f3498b32dbd0aece019c5ab5a87c6ceda10ba391ca98409e30dac01c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE95 10632 bytes
font_02_sfnt_off00010279.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10279 4324 bytes

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