Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3ce8ede8abe6d4…

MALICIOUS

PDF

49.0 KB Created: 2020-08-29 22:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01fda8cdb46a140560313ab284c3cc49 SHA-1: 03c1f6e0b4ff595aeaf8d3de988acb10a8ce803e SHA-256: 2c3ce8ede8abe6d4ee6b7a4d3f27651500b48153d2dc7403c86e9671e42f2298
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as an offer to watch a movie online. This link, 'https://ttraff.com/wix?keyword=watch+inception+free+online', redirects to known malicious infrastructure. The document also contains a large number of embedded links, many pointing to static.usrfiles.com, which is indicative of a link farm used for SEO poisoning or distributing malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=watch+inception+free+online
    • https://static.usrfiles.com/ugd/b8c837_c9b8e2d6641343489e16d1e6645c7033.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ba776081e1a4b24b12f870d08ffc894.pdf
    • https://static.usrfiles.com/ugd/b8c837_963a1f0ead924d0b943671f60847e9cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_39eeba0d4fee4244be935df4fb142883.pdf
    • https://static.usrfiles.com/ugd/b8c837_6102768d76804396873798d0d77a7a9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_75d174eab1064ba5aaa37a2a460d1a06.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d2de1530d9a40f7a8d9d9c9c6652491.pdf
    • https://static.usrfiles.com/ugd/b8c837_e78e36a1c22747dcb339d72b2da3f9c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_23b49f4d1d194ea6ab94de09e6916209.pdf
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/sewupuravoded.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/zajutaduna.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/atkins_phases.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_off00006db6.bin
0fca9d13aa21ef4b1b4b141fe3c053eab41a0fe002b61d5cea4e0a4b6cb918e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 4936 bytes
font_01_sfnt_off00007e82.bin
9225a618c8eb002ce4265564bbe9cf53f61f92ab8ce83e1087ab89b2df24e3c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E82 10240 bytes
font_02_sfnt_off0000a1cb.bin
2a2be9804abc26f333b4ccc46f38b83a27ba4f895e429391c02bd8d513f5b9df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1CB 16192 bytes

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