Malicious PDF — malware analysis report

Static analysis result for SHA-256 936565abadf933c6…

MALICIOUS

PDF

34.0 KB Created: 2020-08-30 23:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64bfdee6071fe1a713549eb6f08f2b8e SHA-1: 0f1ab8904ef1e8da36ec22e7b412a5f07853b5b1 SHA-256: 936565abadf933c6d236a8e37c49f73b6a718998015b23fac6d4ddba949445a4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=kurtulu%25C5%259F+son+durak+full+izle'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the highest priority IOC being the malicious redirector URL. The document body, though heavily obfuscated, also contains this URL, reinforcing its 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.cc/wix?keyword=kurtulu%25C5%259F+son+durak+full+izle
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/jaliwusedatok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/rawokasimisakazog.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/velalolomizawigabewerepo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/repukixatazulasewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdf
    • https://static.usrfiles.com/ugd/b8c837_74beb7bea6ba4e3fb1485657d6d6f66d.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_0f515b03a132432eabfeedc5c66012a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e9739adb50e479a87f65fc5b70b1637.pdf
    • https://static.usrfiles.com/ugd/0aab01_d57d3d47edd3476dbfc5dbdfe1a231c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc25a47a265146d5aba92136afab4e3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2cebcae217b434ea6de0aeef9b1e0b3.pdf
    • https://static.usrfiles.com/ugd/d5415a_81cbbdd88ce74d04844cee0ebdc5b764.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0293/files/genetically_modified_food_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/milotipomuri.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_off00004726.bin
248e7e7a497a38b2ea03eb149974eaff29d1b86a6e378e0c6f42fec8253b810d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4726 5232 bytes
font_01_sfnt_off0000588e.bin
b9176248515df8079dcaf8af74d0bf27c754eabcf4487ca529f35bd3978fc39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588E 10644 bytes

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