Malicious PDF — malware analysis report

Static analysis result for SHA-256 993bf720924d03f9…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 20:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ec7df66360b7ae616db5c2b3aca0254 SHA-1: e82f79254db5f0769c9225972b785e03cedc0ffc SHA-256: 993bf720924d03f9d85504a3150887b5d40d377de4fa10e656c13f4b080854c0
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 known malicious URL, disguised with a keyword related to a popular game. The document body and embedded artifacts are heavily obfuscated, but the primary heuristic indicates a malicious redirector. The presence of a link farm further suggests an attempt to distribute malicious content or SEO manipulation.

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=dream+league+soccer+2018+custa+quant
    • https://static.usrfiles.com/ugd/b8c837_e8a828d5db344b34b4a16364c9714aa7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c051c2ad37c547e49deeae9af09b1a8c.pdf
    • https://static.usrfiles.com/ugd/f14cf6_7a2e530accdc49b99a30753c4827b735.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dae75d72c464edbb56a972af28a8fab.pdf
    • https://static.usrfiles.com/ugd/0e2875_6ce40c4749154bbb85a279263f8336a0.pdf
    • https://static.usrfiles.com/ugd/8ba634_76d5918c7ee94653836c8da9f1084653.pdf
    • https://static.usrfiles.com/ugd/b8c837_a87a723f63444974a24f16f3a7d283d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_66982b67d4c2464abc877d2469cd7e2e.pdf
    • https://static.usrfiles.com/ugd/865d50_7474356a7255452f9b84da4933e6a4fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_f38d507272ba4bb5ac3f24534b1883b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd2509dd60c8478d80cab159c50a1e43.pdf
    • https://static.usrfiles.com/ugd/f96b02_e5e72128cd104a5ea80b73ce023b001f.pdf
    • https://static.usrfiles.com/ugd/f46427_e1b4827cf61645deb01855ed0a82d0b2.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_off00006563.bin
91d9bdfa13f182541b55449e2e1d36c160e6c0cb648315b29253733e8d05839b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6563 5764 bytes
font_01_sfnt_off000078eb.bin
4182233f0fa47846db94687d1c337c6b3a2a37f72e856117328fc2fd9f0f2d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EB 10148 bytes

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