Malicious PDF — malware analysis report

Static analysis result for SHA-256 d39098559cde1892…

MALICIOUS

PDF

73.3 KB Created: 2020-09-02 19:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 551e9016d20183b7f3a4570f912d100d SHA-1: 13bc4d0f6c9e941e27dfd9da98d4e982b3af5451 SHA-256: d39098559cde189244dce818d8d71c5af784674b35b4c3e8b8ca55a6d4c0a03e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bootstrap+admin+templates+examples', which is also flagged as malicious. This suggests the PDF is designed to redirect users to malicious content under the guise of providing template examples.

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/pify?keyword=bootstrap+admin+templates+examples
    • https://static.usrfiles.com/ugd/3e9e83_d43c58639eba453c94e2fdaaa3e1b91a.pdf
    • https://static.usrfiles.com/ugd/4b874d_b83a0dd96891411c9cb944d5319c93b8.pdf
    • https://static.usrfiles.com/ugd/b42fd6_4e42258e2ec14a04a69024eaa07b7490.pdf
    • https://static.usrfiles.com/ugd/b8c837_d89f2b7a62d84af993ab75ef9d688621.pdf
    • https://static.usrfiles.com/ugd/b8c837_64705baa84e54f04aaef17b344e24764.pdf
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/convert_base64_to_image_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/hampton_bay_ceiling_fan_remote_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/0714/6146/files/dodaberigezuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8694/6206/files/robutotesomo.pdf
    • https://static.usrfiles.com/ugd/4b68be_da3c0a1667404a8c861c97b293a99d6f.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_a45cda4203ff449e9ea203db55d7c7ac.pdf
    • https://static.usrfiles.com/ugd/b5aed9_af3a47c0ddd642df9cad1fd05e5f47a9.pdf
    • https://static.usrfiles.com/ugd/b11f6d_c844e717898d4c549c1bd58650dd73b6.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_99508196114c4f2dbdcd682b40ac952c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d720.bin
8c30f872757c764aa134f38a20c3b9f390ee57df13de7ded4f5fe0dbe04ed6c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD720 5012 bytes
font_01_sfnt_off0000e80a.bin
0793c4fef812ea9222579821e285dc9c0c03a900cda98c77f818e18cef63ba78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80A 9880 bytes
font_02_sfnt_off000109f5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F5 4324 bytes

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