Malicious PDF — malware analysis report

Static analysis result for SHA-256 963d084f2dccf4bb…

MALICIOUS

PDF

52.9 KB Created: 2020-08-29 23:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcab5bcb19937a656764234443c55ed2 SHA-1: e88b0a87b45b70daf6900d952f1ab7f5e0c90cbf SHA-256: 963d084f2dccf4bb590e037c582cc3c2a61bb1a84794fced6ddea70abdefeb90
152 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, with one identified as a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=the+gentleman%252527+s+guide+to+getting+lucky', which is also listed as a malicious redirector. The presence of numerous links suggests an attempt to manipulate search engine results or distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=the+gentleman%252527+s+guide+to+getting+lucky
    • https://static.usrfiles.com/ugd/430cb2_c686379b846b428aab5dcb8708f79fdf.pdf
    • https://static.usrfiles.com/ugd/eb4c03_dfae48b11a464221bf02fa092a11b0b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_67660d60ef52465fa2f1dc49f206c923.pdf
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/74263936789.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/fabupisexomepotox.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/giriwim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/dajisapafaworagavexafewev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lawup.pdf
    • https://static.usrfiles.com/ugd/b8c837_99c046e40dcc4af7983cd09e6ce7d7d5.pdf
    • https://static.usrfiles.com/ugd/429b25_ba03f0fadb974c6bb08d9e47f22cccc6.pdf
    • https://static.usrfiles.com/ugd/5bb01c_fc62776ff530463383319a460c251828.pdf
    • https://static.usrfiles.com/ugd/b8c837_b52de928a3dc467795c003702e94c2be.pdf
    • https://static.usrfiles.com/ugd/b65acf_3650e62357874ea79bbb29ae64a67323.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc102151c145408da4fd1d363b2187d9.pdf
    • https://static.usrfiles.com/ugd/d775a9_e16039a989374e9d990e0c3acb64991a.pdf
    • https://static.usrfiles.com/ugd/9e41f0_24bc9e64f06b49eea96a707f8e161aef.pdf
    • https://static.usrfiles.com/ugd/8acad3_30cdc691c72045f5a7bbe4092d35d08d.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006be0.bin
549c3eca30138ded40c082837343ac11e41c8bead87d61cb26dbda052e716fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE0 5404 bytes
font_01_sfnt_off00007e1d.bin
b3061afed70d05ba344a5ac409eb4024750f3cf1ed734e31f2e436bddd761f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 5756 bytes
font_02_sfnt_off00008c87.bin
1ac73d2eb677cd5e366d6f88854bc11b49e33fefec681e470b75392154f4b109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C87 10412 bytes
font_03_sfnt_off0000b06f.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB06F 16092 bytes

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