Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf296a501126ed1…

MALICIOUS

PDF

44.8 KB Created: 2020-08-31 04:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8921f1012eda4c8e691f463a76a20772 SHA-1: 6a9f56044fd59b32f3cdac3573bdc1be196997e8 SHA-256: fcf296a501126ed1dc4e54b0c72a6cab9d48b11237cbbee6ade16a99d799f6af
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=destrancadera+prayer+quotes', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other URLs pointing to static.usrfiles.com, which are identified as part of a link farm. This suggests the primary purpose is to lure users to malicious sites.

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.cc/wix?keyword=destrancadera+prayer+quotes
    • https://static.usrfiles.com/ugd/b8c837_dcc87629cb534cf2b9ec74ea4d011f03.pdf
    • https://static.usrfiles.com/ugd/b8c837_506f562396bf4f09bcbc7d1bd30129cd.pdf
    • https://static.usrfiles.com/ugd/921909_843c99fcb21f4c48aba401d761e8e979.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0c3c45da79249788ec0ee31b601bc21.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7b8a4c79c6443cdbd04f2d7c564ebca.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_79fd9c7831bb46daaf91488ebb599ee5.pdf
    • https://static.usrfiles.com/ugd/384ea4_9bdf95a7f6734d6bba2d34db9a0e8ae5.pdf
    • https://static.usrfiles.com/ugd/b910ae_0cb4bbaa55444a5981500fe98bd120c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f679f1acf09d43329bd606e0487b004e.pdf
    • https://static.usrfiles.com/ugd/b8c837_20f2a63ed025432e8c3b46eb407c12ee.pdf
    • https://static.usrfiles.com/ugd/f96b02_72c2a96a55b54ab6915cf3c2bb5a05a8.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_638dcf1cfbf144e49d79709756d0a93e.pdf
    • https://cdn.shopify.com/s/files/1/0436/4248/6944/files/best_fps_games_for_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/automobile_engineering_interview_questions_and_answers_free_download.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_off000071b4.bin
99d99ff1fa454a7700eee767aba64dee56730128532507d1ff4413c9c29fa657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 5264 bytes
font_01_sfnt_off000083a5.bin
56ddd75342617ad097009fc6e81f10eba17690792d063f118d4e125674449445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A5 10276 bytes

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