Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ffa65c61ac1efb…

MALICIOUS

PDF

115.9 KB Created: 2020-08-10 07:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f1fa47e53c1ef7aa9992fe48a06a380 SHA-1: cb53f21f4ccd6bdecbfc908f5df4e707d3fbfb00 SHA-256: f0ffa65c61ac1efb7c79e36ab178b98d0b26ae67e1cb6d98591dace6dffb0b1b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cloud+nine+caryl+churchill+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO poisoning effort to distribute malicious PDFs. The document body is heavily obfuscated but contains the same redirector URL.

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=cloud+nine+caryl+churchill+pdf
    • http://files.masonkirkpatrick.com/uploads/1/3/2/6/132696030/kotezawinip.pdf
    • http://files.ashwoodcarpentryjoinery.co.uk/uploads/1/3/1/6/131637255/kozagudopuxulepe.pdf
    • http://tojonen.aierossmann.com/uploads/1/3/1/0/131070476/1885330.pdf
    • https://cdn.shopify.com/s/files/1/0437/5661/7877/files/49534794022.pdf
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/all_chemistry_formulas_for_neet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/56344535990.pdf
    • https://cdn.shopify.com/s/files/1/0449/9665/7320/files/34462056087.pdf
    • https://cdn.shopify.com/s/files/1/0435/2131/0875/files/mosigifip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/josuvakixibasigagisovusa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/95971446075.pdf
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/pitiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/14273491816.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/sepisubogaviva.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_off00017ff5.bin
2f00fa163c5d8edb11e54ee2527e1815b33b4ed19e3efc5ed52bd2898af33dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17FF5 4992 bytes
font_01_sfnt_off000190e6.bin
7fe21442f707159e41e56e0bdfd990cbbb01b77df08d99dee17a5e1486e5bb31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190E6 10240 bytes
font_02_sfnt_off0001b3f9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3F9 4324 bytes

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