Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36fe6fb81c6ced2…

MALICIOUS

PDF

36.8 KB Created: 2020-08-25 17:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a353b0a68bdbd8fcf58c4ab3b84c38d SHA-1: d459d6a5df7ce4be33bc3ac2ce29beef4f5ce4df SHA-256: e36fe6fb81c6ced2b77fd696dd38f00fdada15d71dce88d0191178b92a76b234
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.com/pify?keyword=online+video+er+apple', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of a link farm further supports the malicious intent.

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/pify?keyword=online+video+er+apple
    • http://sifijaku.nuggets.space/uploads/1/3/1/6/131606255/gemaxaw.pdf
    • http://files.broncohack.net/uploads/1/3/2/7/132740614/708905.pdf
    • http://files.rusticbilliards.com/uploads/1/3/0/7/130740256/8542243.pdf
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/mirilub.pdf
    • https://cdn.shopify.com/s/files/1/0440/8875/4341/files/ravowolizuwiruxadovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/pirate_king_online_explorer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/anita_brookner_hotel_du_lac.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/togekajakisuguvumoxowik.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/nhsggc_delirium_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/spreadsheet_package_to_an_accountant_at_work.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/xapitoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6613/files/kegepek.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_off000052d9.bin
e8f6e23194c9889e10e4bac26cb131a66453fbe2b912a9128e16c6e38fe6df9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D9 4864 bytes
font_01_sfnt_off00006379.bin
a6fc58ee14bfb7f229cbd0ba2de6d9ade4eedbc4b3b6d93617b99813ae03ecd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6379 10364 bytes

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