Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d46ddd2b984f2d2…

MALICIOUS

PDF

47.0 KB Created: 2020-08-30 18:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a67fd45e18b4c398b3967752a760464b SHA-1: 320c57d3a82f8b03a0f9f1aafccf4555c4ef6c8b SHA-256: 9d46ddd2b984f2d20a0afdc39aeb333e30bac776e5ed8f6e360c873a9cae7274
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the link to 'ttraff.com', which is known to host redirectors. The document body, though heavily obfuscated, contains this URL and appears to be a lure.

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=beware+the+claws+that+catch+alice
    • https://static.usrfiles.com/ugd/ae059d_2eb220b17c82405d92a7f93d8f368dfa.pdf
    • https://static.usrfiles.com/ugd/e8506d_971074e110e04486932a241d6f3186e9.pdf
    • https://static.usrfiles.com/ugd/e32576_a1091e94ecb24029b434534ca5fb49ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_8bc0202a14354e588fc094bff3d3c6d3.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/yardman_lawn_mower_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/5369756921.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/cosmos_cable_gland_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/kanoxojixobedet.pdf
    • https://cdn.shopify.com/s/files/1/0439/1524/7771/files/fox_sports_pro_pick_em.pdf
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/livro_admirvel_mundo_novo_em.pdf
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/sasadadarepabitoxan.pdf
    • https://cdn.shopify.com/s/files/1/0436/4209/3728/files/nuroputapediniputuwu.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_off00007bab.bin
6377e33c2daae8379100b033bd43f42953ee77a1b6c44aebf7c75f52f1923968		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 5028 bytes
font_01_sfnt_off00008cc9.bin
885309e9fe5fbbde52251e68e9bcfffce4c9ad8eb21136b43c4f18c11608f921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC9 10340 bytes

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