Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa119874e532a127…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 08:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a64ec684cdc885325fbaddf7f2411b41 SHA-1: 2c5e69d481d207f028fd27b95d49328bb4f140bc SHA-256: fa119874e532a127c5a7d236ae36f860ddcab8649179f0d3dfc44b9c93f9ed6a
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL designed to lure users with a game-related keyword. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The primary malicious URL is ttraff.cc, which is used to redirect users to potentially harmful content.

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.cc/pify?keyword=impossible+quiz+3+question+8+answer
    • http://files.yogabyamandaretreats.co.nz/uploads/1/3/1/3/131379732/wukipema.pdf
    • http://files.kgraykaliana.com/uploads/1/3/2/6/132695575/1ce896054f5e7e4.pdf
    • http://files.nigellasativacenter.com/uploads/1/3/2/6/132696104/ca09d84a.pdf
    • http://waxebik.papajoeshumblekitchen.com/uploads/1/3/1/1/131163599/busizumomodutulifa.pdf
    • http://files.bemisnursery.com/uploads/1/3/1/3/131384136/989767dbb.pdf
    • https://cdn.shopify.com/s/files/1/0433/4203/7150/files/13487981715.pdf
    • https://cdn.shopify.com/s/files/1/0436/3842/3710/files/calendrier_2020_avec_numro_de_semaine__imprimer.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/bilanz_lesen.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/10807580537.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/80895159859.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/11905949425.pdf
    • https://cdn.shopify.com/s/files/1/0429/0327/3628/files/97384864443.pdf
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/sql_server_format_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3248/files/best_accountant_cv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/natisamom.pdf
    • https://cdn.shopify.com/s/files/1/0447/7721/0005/files/caballo_de_troya_3_jj_benitez.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/vertical_limit_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/15793409510.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/javascript_byte_array_to_file.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_off000067e6.bin
cbfacaaa17791b927396e64314baf3da13974862c0598810a3cbf09a4f980266
pdf-font-stream PDF embedded font (sfnt) at offset 0x67E6 5668 bytes
font_01_sfnt_off00007b2b.bin
a7c812f07c297af2feb8c3d4dffb7ae932f85585d671726986b98eabc184adf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2B 10192 bytes