Malicious PDF — malware analysis report

Static analysis result for SHA-256 57065903dccd489a…

MALICIOUS

PDF

39.1 KB Created: 2020-09-01 04:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55acf9394c359b8bac4be73a3bd6cd5c SHA-1: f4d8a79f54c9a98725f6e5550c5d569a52033b48 SHA-256: 57065903dccd489af07b229e73c148e2dce248f4c18eb8b8f9a38807ffa83a37
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.club/wix?keyword=naspghan+guidelines+constipation'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, appears to contain the same redirect URL. The primary attack vector is the malicious link, designed to redirect users to potentially harmful content.

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.club/wix?keyword=naspghan+guidelines+constipation
    • https://static.usrfiles.com/ugd/50de67_9e23dd881b1c473388791afff2e2dbda.pdf
    • https://static.usrfiles.com/ugd/3f80ec_8b46f902465c488a8d5a1dbf66640a6d.pdf
    • https://static.usrfiles.com/ugd/c0b427_af5935b9a9a3461fbb7c2bf1f96dbd4b.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_91abd8c7aa854160b467f193899c545c.pdf
    • https://static.usrfiles.com/ugd/5bb01c_a203d3982ba446b889bacfac24ef6f10.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/81469378649.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/kuwevuwamasor.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/12743829908.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/77223537418.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/27176917202.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/32417031835.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9043/files/kidoxufasagobokiwaxigup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/monthly_planner_2017.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_off00005c05.bin
765d37c7c0e1732938c6af155aa4ddf79596658125900be80ad6c04aec737c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C05 5208 bytes
font_01_sfnt_off00006dc1.bin
3c14253e192ecb298bffcc62312a10fd2bb386841ad79d42459dd343d0b950cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC1 9940 bytes

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