Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6dcf6edb338deb…

MALICIOUS

PDF

43.3 KB Created: 2020-08-03 20:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a09bc5a896f50e549b4417f4d85703a SHA-1: 4abfeca82f1e089558801f0eef6e96fc0c8d4d54 SHA-256: fa6dcf6edb338deb1ca55b53fe9de1833722a3d3917612e2c2db7b1b08d42ff7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=baptism+of+fire+witcher+pdf', is designed to redirect the user to potentially harmful content. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking PDF links, suggesting a lure to external malicious infrastructure.

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=baptism+of+fire+witcher+pdf
    • http://files.oilymantra.com/uploads/1/3/2/6/132695212/vifamefi.pdf
    • http://files.bassettlaw.com/uploads/1/3/0/9/130969656/8564966.pdf
    • http://files.caimbeulsforge.co.uk/uploads/1/3/1/0/131071137/1430455.pdf
    • http://files.cerebralpalsyproject.org/uploads/1/3/0/8/130814169/ed4b1160.pdf
    • https://cdn.shopify.com/s/files/1/0438/5826/4229/files/discord_different_text.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5797/files/78310361935.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98048873934.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/vusejofakedimid.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/39853960890.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/64178980415.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/time_spent_on_lol.pdf
    • https://cdn.shopify.com/s/files/1/0438/4882/7040/files/26877762056.pdf
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/penofujosukadotazul.pdf
    • https://cdn.shopify.com/s/files/1/0431/4601/8967/files/doxikozigudemivesirul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/devoge.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_off00006b84.bin
9c8611f5d46d9e6dbb2c620cbb851d8db98c3c29f35ad43e6da145e99ab2e32c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B84 5504 bytes
font_01_sfnt_off00007e2b.bin
ca353261c4652cc91eb02f999e82d0a86c7b5b99b29a7c0bce5d0b77a3878b1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2B 10156 bytes

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