Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a07727e0f87a5c…

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 01:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e948394d7ad37c20c3940f3467eac9f SHA-1: 6e1195c13b5e3fc20ce027e75329fe7078595fc0 SHA-256: 36a07727e0f87a5c8dcba5c789bc9b0971109686ba041c5434ddcaec67f37db9
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector hosted on 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a PDF download lure and the malicious URL. The presence of numerous external links, many pointing to 'static.usrfiles.com', suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious content.

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=practicing+the+power+of+now+download+pdf
    • https://static.usrfiles.com/ugd/b8c837_23c7d0aeac2b4d37ba680e36ea7ee7b9.pdf
    • https://static.usrfiles.com/ugd/20d83a_7bfb13bd23554a468ca182b9c2164386.pdf
    • https://static.usrfiles.com/ugd/b8c837_27e5746e514149d78c5df84dd31daff6.pdf
    • https://static.usrfiles.com/ugd/d94ae5_1945dab83a33451993b304cb13b240cf.pdf
    • https://static.usrfiles.com/ugd/4826f5_4cd114894ab9474b98c5ea7312fdc7e3.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0434/7074/9849/files/burapoluwofapifozisogud.pdf
    • https://static.usrfiles.com/ugd/bfbc46_cea0595956db4e498e66267bf60a5b9e.pdf
    • https://static.usrfiles.com/ugd/e4ff69_8d074f93e5154382af3fd33559ff98e1.pdf
    • https://static.usrfiles.com/ugd/6116da_da65dd5fc15144349c8ae573c0b1be5d.pdf
    • https://static.usrfiles.com/ugd/3f80ec_7e8d773b9e9140e7b504ab2db9de646a.pdf
    • https://static.usrfiles.com/ugd/b8c837_91436a01911e49eab3aeec83c749f18e.pdf
    • https://static.usrfiles.com/ugd/7f46b5_2511a3762aa74b18b9b0d2ad7dff5036.pdf
    • https://static.usrfiles.com/ugd/b8c837_60a2b0324e5e4562ad4f5ea1b57b51ee.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_off0000509d.bin
57d2c7d050a5b7311cc43597444ed4c9507b539ab30313b502b213a715f3bab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x509D 5332 bytes
font_01_sfnt_off000062bd.bin
88a2c843f11758917b4574a011a1021dbc332ce0e7621f66b57fb44c821333cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BD 9976 bytes

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