Malicious PDF — malware analysis report

Static analysis result for SHA-256 d159fadb0a69da97…

MALICIOUS

PDF

43.5 KB Created: 2020-09-09 01:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e6ac2567ff7bc13a72580d86cfb8000 SHA-1: 22cb70374d0853843a7c2202d7330d62c7e403d7 SHA-256: d159fadb0a69da97cbfb5a96d177e89e1ccb4b6b8a876684d9a2691af3d3228b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, including a critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL 'https://ttraff.me/wix?keyword=set+background+color+android+java', suggesting a lure to a malicious site. The presence of numerous benign-looking PDF links likely serves to mask the malicious redirector.

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.me/wix?keyword=set+background+color+android+java
    • https://static.usrfiles.com/ugd/5befcb_53e852022bdf4a06af218c78505e91e8.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_9396f8a2835843a1b98f59147c3cff31.pdf
    • https://static.usrfiles.com/ugd/784815_cacbd46c21c84fd09de93bd8ee25ad8e.pdf
    • https://static.usrfiles.com/ugd/7f5dc5_f517b7a3cf07419c985e65cef8941233.pdf
    • https://static.usrfiles.com/ugd/314c35_c13715eb04d34468a6f07695bdf4c83d.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/2272205240.pdf
    • https://static.usrfiles.com/ugd/b0cb2d_be8c21ff0b2245a4891f4a5a87eac445.pdf
    • https://static.usrfiles.com/ugd/0f5b72_749909209df24e4da188c44cf00746f6.pdf
    • https://static.usrfiles.com/ugd/41a0b6_d3c6d3d72315437592d09fe6d49c9807.pdf
    • https://static.usrfiles.com/ugd/9421c8_8400d8b9128948809a5460c38d38a4c7.pdf
    • https://static.usrfiles.com/ugd/67f5f7_0d21fab0283845a39be310c6d23cbd25.pdf
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/daily_planner_template_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/73239021345.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_off00006b60.bin
5c765750f8b0d0e424cb9735996ff2b517ee4e98400b60528e451784426820e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B60 5372 bytes
font_01_sfnt_off00007dc4.bin
a2964e425e1209b7a7feaaeb812c92f0aee2e64e82da5a305baf9c85c30b7ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC4 10568 bytes

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