Malicious PDF — malware analysis report

Static analysis result for SHA-256 98233f8704e16a10…

MALICIOUS

PDF

51.8 KB Created: 2020-08-29 14:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fe4cfa576d6988fd1429a5536f9e9ec SHA-1: d84d586b7425461f4dcaad08afeeb131bd11fd49 SHA-256: 98233f8704e16a1086b6d9b97d8fa47464a9c28b86455b49d59537e42d187910
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=5e+archfey+warlock'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0450/2175/7590/files/desequilibrio_acido_base.pdf'. The document body, though heavily obfuscated, also contains the malicious URL, suggesting the primary intent is to lure the user to a potentially harmful external site.

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=5e+archfey+warlock
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/desequilibrio_acido_base.pdf
    • https://cdn.shopify.com/s/files/1/0437/7310/0184/files/26010179442.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/rifisemu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/california_dreamin_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5087/files/22387336137.pdf
    • https://cdn.shopify.com/s/files/1/0437/0333/7114/files/arlberg_piste_map.pdf
    • https://static.usrfiles.com/ugd/b8c837_0eb3a93c1f1a424090ce6f63b8e968f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_4de4d67c5a644ab482c24df1dd9a1e9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cc918520b014589bc44b787b64cfde7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4888ca9a04c847228ff20eebe8ea2965.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/personal_pronouns_in_french.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3691/files/jobubugupokapekomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4814/0949/files/napodudikumiteforekosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/52627350913.pdf
    • https://cdn.shopify.com/s/files/1/0464/6046/9400/files/mewuzogitonu.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_off00008d49.bin
7cf8a508e6728e3c56764f5f3d876433a03d6b6e8f9159a607842e3ab2f7e7be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D49 5076 bytes
font_01_sfnt_off00009ea2.bin
8609558e052ebadd3d8970b19911814056685e055ec7c15dda9dc8bb18de57a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA2 10416 bytes

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