Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b084f4abdc8a0c…

MALICIOUS

PDF

56.2 KB Created: 2020-09-07 07:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c5f518e5b5d55678bfcaa043b379ba4 SHA-1: 06da36731a28e0c68f5548ac35e4cdaec2a46e19 SHA-256: c9b084f4abdc8a0c9f88b448400e18a257f82c175271a755c3c148bbe2920854
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL which is presented as a link to a PDF about data analysis. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a link farm or redirection strategy. The primary malicious IOC is the redirector URL.

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.link/pify?keyword=qualitative+and+quantitative+data+analysis+pdf
    • https://static.usrfiles.com/ugd/47b1e8_01f639386a704ad4aa8ae36a0f490850.pdf
    • https://static.usrfiles.com/ugd/97634b_a8a9cfa92aba48b1aff7528dce0aad78.pdf
    • https://static.usrfiles.com/ugd/221f3a_2c4c78f57b04486398da85d4395b3eca.pdf
    • https://static.usrfiles.com/ugd/2e16aa_0ebc17b3863e42d79a5cfade4b94c920.pdf
    • https://static.usrfiles.com/ugd/e6092c_6832807a9b13477fbd324c3602034866.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/gagesawe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/lazivow.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8382/files/kedozadebule.pdf
    • https://static.usrfiles.com/ugd/1e32c2_00acef1674474994a4d90c778ae9c5c2.pdf
    • https://static.usrfiles.com/ugd/54bec1_bb85e3c2e1df4eef85311a72dad58c21.pdf
    • https://static.usrfiles.com/ugd/fbccce_4ab24dc0152c46f292f85f6de23e760f.pdf
    • https://static.usrfiles.com/ugd/48f461_92b378ef018c43a6a59eb66e9bbd774f.pdf
    • https://static.usrfiles.com/ugd/ced2dc_505e0815a91a467d99180e6d07dd5334.pdf
    • https://static.usrfiles.com/ugd/97aff7_ca94f1b2c93e42a5ac5a6439a9904358.pdf
    • https://static.usrfiles.com/ugd/50de67_19d47d242ff346b697a2cc6e1b348de0.pdf
    • https://static.usrfiles.com/ugd/b8c837_efd06bd06baf434aa44f185218b28860.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_off00009f46.bin
e422acb3494ede52ca31bac2a502ef58de66e79c1c0abe2ca7eaae54961c2e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F46 5288 bytes
font_01_sfnt_off0000b165.bin
ed7c4278c3d74f292734abcb8020fcf7ab6dfad70789e04a64c49e54c7a47653		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB165 9996 bytes

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