Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eed0588d3b81dbe…

MALICIOUS

PDF

43.8 KB Created: 2020-09-09 05:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72ec2182bd533ee8449016b8199e7e57 SHA-1: 37cc1362a766e3e39d86f74e2ca04b2c63d936b8 SHA-256: 3eed0588d3b81dbe1ba7905528f85bdcb627fbf41ee6a46acf5936361f8079b5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=bestie+by+abochi+mp4'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, many of which are hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves tricking the user into clicking the malicious link, likely leading to further compromise.

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=bestie+by+abochi+mp4
    • https://static.usrfiles.com/ugd/6f9b04_869576e9888d46ca8980bfeb72055aa6.pdf
    • https://static.usrfiles.com/ugd/b1277d_9ad48ee470c744d4847b726f7b910b40.pdf
    • https://static.usrfiles.com/ugd/5438e3_98ce935fa7b5480989a12410069cfdd8.pdf
    • https://static.usrfiles.com/ugd/bf650e_e10636a55fbe48c3bdff4da352df589a.pdf
    • https://static.usrfiles.com/ugd/1f5cef_a255e8668e904583a5709f7ae38d3e2e.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/1608393268.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/pofaje.pdf
    • https://static.usrfiles.com/ugd/36f25b_488b6bd7a7dc422daf652df9704c5193.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6d52c594b6346f6a852138a574443f8.pdf
    • https://static.usrfiles.com/ugd/e4bc37_9e045b9b2c174ca1825809c543064395.pdf
    • https://static.usrfiles.com/ugd/b8c837_611ab0e9ed0f4056b6505d083582c493.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af6a01153da4800bb69aa80a8cf6f5b.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_off00004ec6.bin
154f0946338135f4ab40a75ba2555fca30ed5d36a1d9c8c97c1b66b068b95b1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC6 5424 bytes
font_01_sfnt_off00006121.bin
04aeb3b669f8f18e88e8f4ff76ed76c4d7bb3fc92297ef3e0d5327aabd161173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 9988 bytes
font_02_sfnt_off0000839c.bin
9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x839C 18776 bytes

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