Malicious PDF — malware analysis report

Static analysis result for SHA-256 563b00dcd8c73116…

MALICIOUS

PDF

38.9 KB Created: 2020-08-30 05:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55c7c82babfe6c634a0e5b3943147958 SHA-1: 51d94f18faeae3e38b16b9213f5606b1cc90a037 SHA-256: 563b00dcd8c73116f5cc3b25cde6a5c1fb504b8d5cc969eaa990eb5c3c2b3b79
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'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external PDF links, with 'https://cdn.shopify.com/s/files/1/0432/2469/4942/files/kuwedowamusop.pdf' being the first identified. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to drive traffic to malicious infrastructure.

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=born+in+blood+and+fire+pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/kuwedowamusop.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/jimefule.pdf
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/two_sides_of_effective_oral_communication.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/kosokovexijanuv.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfe4b25bd3ae4f6299dd6680bcdcd65b.pdf
    • https://static.usrfiles.com/ugd/a467d2_b53d50b5923f4a11880fca7fb578d601.pdf
    • https://static.usrfiles.com/ugd/067ecb_b56ff9dcd09d4a63a6d072c510ba6c7b.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/vutaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/absolute_carnage_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0432/0673/8079/files/jinamekaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/43884248172.pdf
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/54602045339.pdf
    • https://cdn.shopify.com/s/files/1/0432/8334/9668/files/presuppositional_apologetics_stated_and_defended.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_off00004dcf.bin
639b4f77470ab19092a71115ee637ae45771febe67fd3c3a71a76c5103e5027e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DCF 4756 bytes
font_01_sfnt_off00005deb.bin
dfe6e78edaaa07125bda115e06a4f41a6421579d1f79e7667181f2b2dbff71b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEB 10228 bytes
font_02_sfnt_off000080e4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 4324 bytes

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