Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd8121390834a30…

MALICIOUS

PDF

47.2 KB Created: 2020-09-01 02:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd3a5e5fe927908412b9ca03015d864 SHA-1: 9ee87de57de9d0adc9944c2d6299dcaf7bc423d2 SHA-256: 8bd8121390834a3049f42f1732d35e64070631286a53a195baf1dcea61aafe3e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=bodybuilding+training+chart+pdf'. This URL is presented within the document body, suggesting a social engineering lure. The PDF also contains a mass external PDF link farm, indicating a potential SEO poisoning or link farm tactic. No scripts were extracted from this sample.

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=bodybuilding+training+chart+pdf
    • https://static.usrfiles.com/ugd/724fb5_b88d1863a2ae468a84c66b55d343d282.pdf
    • https://static.usrfiles.com/ugd/c33cdb_2e555e24a3c3431191f9fe3bdbec8d0e.pdf
    • https://static.usrfiles.com/ugd/906e9f_df75a3ebbecf4bf9ac2cc54a363694eb.pdf
    • https://static.usrfiles.com/ugd/4d6844_43af3869113248cea9e7d21fcdee03a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b072c06d4a21493abc00cecbcca5bde9.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_414f74f557c445e3ae49bfba561d6fd9.pdf
    • https://static.usrfiles.com/ugd/271e65_babd139886754c74b23a7cd249181144.pdf
    • https://static.usrfiles.com/ugd/ade4e6_e4d0957c2c47493eb534530d5fb46246.pdf
    • https://static.usrfiles.com/ugd/225520_56d5f619222242bcb3224dcf3f97a976.pdf
    • https://static.usrfiles.com/ugd/c8a981_5ae8797daa9546b095b4ac0b050385ff.pdf
    • https://static.usrfiles.com/ugd/c1de29_3a73b3fa7e394d69a777be3f2596eeab.pdf
    • https://static.usrfiles.com/ugd/b8c837_08b7e61acb7943a58bb4d15be473e1be.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/upmc_low_oxalate_diet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3367/files/79528855795.pdf
    • https://cdn.shopify.com/s/files/1/0432/0369/0660/files/dudimon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d8e.bin
13e3fed65969ea173bb01db7ee9c65a663db217c830197d91b10ad0db114226e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8E 5292 bytes
font_01_sfnt_off00007f7f.bin
45e1de8e25af8b3836bdf7242faef57f96f964ae5719564ef9e55a9239f39a81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7F 10072 bytes
font_02_sfnt_off0000a1fd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1FD 4324 bytes

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