Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4417b145ccd534…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 21:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748e4e0c9c5022598e7c42fd56602c90 SHA-1: 40cd787fffccfb7da49eaf55ef91a934a2f7560f SHA-256: ad4417b145ccd534ead0d52af3b2dfd6540861e0747e568c9b000baf0ef1ed89
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 Shopify-hosted PDFs. One of these links, https://ttraff.cc/wix?keyword=natural+right+and+history+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious infrastructure. No scripts were extracted, and the document body contained mostly garbled text and URLs.

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/wix?keyword=natural+right+and+history+pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4282/files/40328954241.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/is_csgopolygon_legit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2877/4044/files/free_magazine_cover_mockup_template_psd.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/catch_and_kill_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/56430999884.pdf
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/pikonuwabamifemili.pdf
    • https://static.usrfiles.com/ugd/b8c837_61761b9505014bd89936eab8b027ceee.pdf
    • https://static.usrfiles.com/ugd/ae059d_c2caa16af9d94104b079a19916abeabc.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b583fcf5f8a4e5b88a87041d508d6a0.pdf
    • https://static.usrfiles.com/ugd/9b5f63_2faadafd8ba64ca9ba30eeca3379f10c.pdf
    • https://static.usrfiles.com/ugd/289c5e_da4cac1cdde042d39d6671475dfed138.pdf
    • https://static.usrfiles.com/ugd/eb6612_7592270d6f564ddcaf3e2bf75a51073d.pdf
    • https://static.usrfiles.com/ugd/b8c837_eba7bf65c2c84f02a6739c84ebca9f86.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_off00006bf1.bin
45d126e17643eb581d686bbf1a06e641cc0c76bdcc82c38eabb0ba3f56961aef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 5376 bytes
font_01_sfnt_off00007e3f.bin
f46be4c0ce26d937e3ef8868f48aac3f459f5d66dc85b1268ded46c9904d9364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3F 10796 bytes

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