Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab055025d4bd076…

MALICIOUS

PDF

87.2 KB Created: 2020-08-29 23:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e85de45af9448e449d54ff2e8f0aa7b SHA-1: 7bfb78c965de360c4f8fd4d87afceab1c8ca072e SHA-256: 1ab055025d4bd0765bf387cb652d857d654c2e3ea1e55e9db601fe710317b1a9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.cc/wix?keyword=michael+h+hart+100+tokoh, which is likely used for redirection to further malicious payloads.

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=michael+h+hart+100+tokoh
    • https://static.usrfiles.com/ugd/b8c837_9b344450f25b49bf95e1d2fa05b85f01.pdf
    • https://static.usrfiles.com/ugd/934fc3_2f70425f72bd4b438c61bf52c31d6038.pdf
    • https://static.usrfiles.com/ugd/b8c837_6af7c90fc7c6482182a8da4ad1b15588.pdf
    • https://static.usrfiles.com/ugd/0baf77_5b7eae2968524553888ddd4c05a52489.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d6b61e60e3f448f8a4c378df59dd932.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2685bb0124642d180590ce27b53133b.pdf
    • https://static.usrfiles.com/ugd/b8c837_527e1dd520674f53a0cf9c4579a140c3.pdf
    • https://static.usrfiles.com/ugd/f3cb45_1465c9cc6f4742c19a43f886d38c5917.pdf
    • https://static.usrfiles.com/ugd/b8c837_867dfd62903a4df59efb9f9b30a9b231.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/unzip_tar_bz2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/padma_shri_award_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/19268452342.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/19339811649.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/81593253650.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/83735071358.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_off00011a95.bin
c9150eb855e6a22f1549e2763c4f420654b0b708ade60779156d9ea91da4114a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A95 4972 bytes
font_01_sfnt_off00012b77.bin
5eeac0398d62c03d807ca730c75d1106e9f4781f362f918a1db2d788f6bb06a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B77 10536 bytes

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