Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6e11a267a1dc71…

MALICIOUS

PDF

39.0 KB Created: 2020-08-29 05:38:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dd89348aa0debbc64f49b20999b3b3f SHA-1: 78622a11922a2171f2d7d1b563447e16854619c5 SHA-256: 4d6e11a267a1dc71d51334e44e7aacd9bc830e93ab68c1efa54f5d39d89a5059
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains text related to 'make magazine pdf free download' and includes the same malicious URL. This suggests a social engineering lure to trick users into clicking the link, likely leading to further malicious content or downloads.

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.ru/wix?keyword=make+magazine+pdf+free+download
    • https://static.usrfiles.com/ugd/b8c837_222deceaae0748d1927b6cf8a0228f86.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9949b50c03744fc9e4eac8629827ea3.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fe391e1ecc7423fbb588e96e9cb1cfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_61576a07a13746e8856816288984f154.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c071499630f4da8a037e399882d5f86.pdf
    • https://static.usrfiles.com/ugd/b8c837_d68c0965a14c4a3083f3c9f0077d06fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_1095590f9a8040b8ac1fdfaf28fc77ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f0a8b3c5cbf4176b306faa35fef52f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_364c39ecf41c4c21979d5df5588fe990.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/aerotransporte_de_carga_union_tracki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/lee_bermejo_joker.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_off000051e6.bin
dcbc64658c1da0db9b4ca1369591f4f08e1e6c247bf4b82f5c426865ad72cd1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E6 5392 bytes
font_01_sfnt_off0000644e.bin
474701169d048c0ef63fb6f6ee99ada4a552b2b9021a0d045fac86d6420d50eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 13036 bytes

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