Malicious PDF — malware analysis report

Static analysis result for SHA-256 2564a8e219260500…

MALICIOUS

PDF

40.2 KB Created: 2020-08-31 03:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 617429153c10b98e01354c20e195e066 SHA-1: b3c5f78c4f380df2e563f9170f1c378343992adf SHA-256: 2564a8e2192605003e720525cc16e96e736d36174f8a2813d9ca77e02af28731
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and a critical heuristic firing indicates it links to a known malicious redirector infrastructure. The document body, though garbled, contains a URL that appears to be the same as the malicious redirector. The PDF also contains a link farm pointing to numerous other PDFs, likely to obscure the malicious intent. The embedded JavaScript and the malicious redirector link suggest an attempt to lead the user to a malicious site.

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.club/wix?keyword=cancion+con+todos+partitura+coro
    • https://static.usrfiles.com/ugd/362633_23c0cd948c5a4c34a064dbf2cf563906.pdf
    • https://static.usrfiles.com/ugd/b8c837_993970a48f704fc4939cf0e755477601.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec6dc4abfed24e0485d191fad560d80a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cf667b027d048ed83fedcfa84e3f7d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d555d847c9024a99bd9a694c86e40bf4.pdf
    • https://static.usrfiles.com/ugd/a838c0_73e68f8ef2dd42c1864cee6440419824.pdf
    • https://static.usrfiles.com/ugd/067ecb_b15fd7377536430c8a3e9d6a572cd52a.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f270386712642d7ab246af03b1606e4.pdf
    • https://static.usrfiles.com/ugd/8cbfce_dc8663db1da9443897b83dc35e9e9be3.pdf
    • https://static.usrfiles.com/ugd/ce14f3_ee48376ee202438e96ddef69a3c5822a.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_off00005d6f.bin
3bc6dbdf17a743fc925a5f980c0727a2821d2b99ea38f76997f5ebd52ad73a42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 4940 bytes
font_01_sfnt_off00006e42.bin
a5b401e0ec6797de5a81ef7f9c58b2c941ecc65da0c55ec83d5b3037dc3c2468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E42 11340 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.