Malicious PDF — malware analysis report

Static analysis result for SHA-256 443eef356bcb0ae0…

MALICIOUS

PDF

45.3 KB Created: 2020-08-30 15:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b878eb1a4345a52f8399e4df7cb813f SHA-1: ea07e886f349554c548261d645297ba9b366e825 SHA-256: 443eef356bcb0ae0e1313d4b3dce2cb0175dffdf463af6eaaf4ea57f281a5ec9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, 'PDF_SEO_LINK_FARM' suggests the document is part of a scheme to manipulate search engine results. The presence of these elements strongly suggests an attack pattern focused on redirection to 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.cc/wix?keyword=ck2+theology+focus
    • https://static.usrfiles.com/ugd/e2c6c1_c54a0a3d391949bd90db21d03ef86877.pdf
    • https://static.usrfiles.com/ugd/b8c837_947bb5f389fb4debabc2e21b2e1a5749.pdf
    • https://static.usrfiles.com/ugd/b6edda_bcdb2cd06f994b26b3c586043278aefa.pdf
    • https://static.usrfiles.com/ugd/b5472a_27a5f7b180e74c4984d827eac1811f3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_529951ec6117469db58261daf5e5997e.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/3780785165.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8ee6b17fb5641bd94b5b5786a7b4a0e.pdf
    • https://static.usrfiles.com/ugd/eaf48f_fbcf97b6d6ab41289eec6f186c3cd791.pdf
    • https://static.usrfiles.com/ugd/3ce946_1aeeb78bc038407e970bd4e7c5ece38a.pdf
    • https://static.usrfiles.com/ugd/b8c837_204e3d82abd8400ea3720132253bfcbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac398deca5044b7582632b355e49fdfb.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_off00007420.bin
0995a09f871ac2555b9e6ed709c2ecfc91756f762bd147808f8ccc5e61cd9a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7420 5040 bytes
font_01_sfnt_off00008565.bin
a154fb5a35ea2862ed9f235ab3b33ead98b6b687e9bce05e223afca9d73a5416		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8565 10464 bytes

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