Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ae32802dbf7ead…

MALICIOUS

PDF

45.3 KB Created: 2020-09-02 02:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 959f2d47141e5a56d40aced051b6a921 SHA-1: 491c711b0d8d6f6f46f5c0243c4fa913bc5636bf SHA-256: a9ae32802dbf7eadeb28ac13845245bb67c3f33779cd3fc9001cdc66bc1996d4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=car+racing+2d+games'. This URL is embedded within the document body, suggesting an attempt to trick the user into clicking it. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the malicious destination. The primary attack pattern is a lure to a malicious site.

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=car+racing+2d+games
    • https://static.usrfiles.com/ugd/76de1a_133ee70a128640f7b29e5285d916a274.pdf
    • https://static.usrfiles.com/ugd/dc98cc_929ce5f857564734b7ce3e3d70ef6008.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c7359982ed24ee2baf6faef56330ab3.pdf
    • https://static.usrfiles.com/ugd/3de8a6_3a73022cf934440084b8cd2a9de9ba24.pdf
    • https://static.usrfiles.com/ugd/041b56_39b94347d11349d4886683d82fbbf44c.pdf
    • https://static.usrfiles.com/ugd/77eba6_657a074325d84788be546aa925c7a488.pdf
    • https://static.usrfiles.com/ugd/6c032c_154f4f8e14d34b84ba5944de732f4ea3.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_e31a54baf2604fa784b669671a982bf5.pdf
    • https://cdn.shopify.com/s/files/1/0441/3734/9272/files/saxon_calculus_solutions_manual_online.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/beekeeping_management.pdf
    • https://static.usrfiles.com/ugd/0511f5_598ae02ecf1740808039bbf59df4cafc.pdf
    • https://static.usrfiles.com/ugd/04e6f9_9fbcd2a39a114b9ab03427aec038ea97.pdf
    • https://static.usrfiles.com/ugd/4d6844_7247709d98834e43a5b33f424743289a.pdf
    • https://static.usrfiles.com/ugd/cc15ef_b428aaa5bfd4443d944beb5398ba4641.pdf
    • https://static.usrfiles.com/ugd/97aff7_17180b25ee13421ca834bf5ee1860503.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_off0000745e.bin
abce2ca0c7a3efc88cb358886b5004e1e557ed72702540e81a16a5f0fbf63434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 5264 bytes
font_01_sfnt_off00008628.bin
ff7c93533bc6b09a67009fae23afc56038d448f37cc57656535aaa2fdcc13f0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8628 10144 bytes

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