PDF malware analysis — malicious · 293ea4c5a2d69e56

MALICIOUS

PDF

45.5 KB Created: 2020-08-30 04:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fed4ccf94192caf7488e6b07a9b18c5c SHA-1: 9379c356d149b949e96b0c0f29c3b57433eaad75 SHA-256: 293ea4c5a2d69e56f9faf169971b86af90beabc40caec21f9f421a8e18949095

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first identified link being to a Shopify domain. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a URL that matches the malicious redirector, suggesting the PDF's primary purpose is 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.ru/wix?keyword=cahier+de+vacances+pour+adultes+pdf
- https://cdn.shopify.com/s/files/1/0438/0160/8353/files/anand_1971_full_movie_300mb.pdf
- https://cdn.shopify.com/s/files/1/0432/0336/2973/files/73366052529.pdf
- https://cdn.shopify.com/s/files/1/0431/5434/2042/files/livros_em_sobre_meio_ambiente_e_sustentabilidade.pdf
- https://cdn.shopify.com/s/files/1/0433/8089/9991/files/limito.pdf
- https://static.usrfiles.com/ugd/c0fca2_41f6cfe41d3242a2b09d9dd5646d8959.pdf
- https://static.usrfiles.com/ugd/b8c837_56dd455462e7419abe3af69b4c9d6f31.pdf
- https://static.usrfiles.com/ugd/c0b427_2919cb0b914f480495417556b93ab4d9.pdf
- https://static.usrfiles.com/ugd/3aee12_f5afe1d7136348c9bed22baaef371901.pdf
- https://static.usrfiles.com/ugd/45fd81_5ecf315406354e3dbbdc65f8020659c0.pdf
- https://static.usrfiles.com/ugd/b8c837_7aa709e0a8fa4b7d8e6c2de0d7835b9e.pdf
- https://static.usrfiles.com/ugd/b8c837_5f60a37f7f08492e8341dd04e2b8b9e7.pdf
- https://static.usrfiles.com/ugd/b8c837_2510d2264deb4f169ffe51de2ba550b7.pdf
- https://static.usrfiles.com/ugd/271e65_88c291d7c44d4e5fb61b0d7d3859bfea.pdf
- https://static.usrfiles.com/ugd/b8c837_759aa6e64ffc4c9f9be74f5447643399.pdf
- https://static.usrfiles.com/ugd/b8c837_62638afceee54a0e8e2ac5723e76ca92.pdf
- https://static.usrfiles.com/ugd/b8c837_b9cb98e7aaa244ebb303e8d3e69481bb.pdf
- https://static.usrfiles.com/ugd/b8c837_b22a068bcf0949e3abe4af7e7f038f4d.pdf
- https://static.usrfiles.com/ugd/b8c837_cfe2ad1adfcd4f928cdced644920cae8.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000626d.bin` `d9fce7191fe8e0581d201f4d2888409f4385e809f649fbb71fec5ad138c2ead3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x626D	5208 bytes
`font_01_sfnt_off00007423.bin` `8bcaa645ce30a7e23aab5067f5e28b46d337971efa7d027bdcd1fac08133efed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7423	17348 bytes

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