Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc77b201a131949…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 15:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ad34b1d030907b09ec1b30faeeff73a SHA-1: 1f80afeaf7f6c32b704f8566f7f7637bda2ea1e3 SHA-256: edc77b201a131949e193c7853ba48ebaf7af9ab2c5c395879cdc696c3e70e218
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it links to known malicious redirector infrastructure. It also features a 'download button' lure and a large number of embedded links, suggesting a link farm for SEO manipulation. The primary malicious IOC is the redirector URL, which is designed to lead users to malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=paint+tool+sai+download+free+full
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/65622398654.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5711/files/zixis.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/chess_offline_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/bipeluvugetosavuwuxu.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_f8357e9a674e46f1aab81accee89d7da.pdf
    • https://static.usrfiles.com/ugd/ecec20_076292c275304be4b713cd867c4bfec7.pdf
    • https://static.usrfiles.com/ugd/9e41f0_4e9ad53f1bb24c6b8553f027c7a1521a.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b1c3a4a488b449f858988c12aeafdd7.pdf
    • https://static.usrfiles.com/ugd/299074_0fc4dff6c6e048a5aba58541097f5dca.pdf
    • https://static.usrfiles.com/ugd/0c4177_1c23138e2d9d4401947e9a90c64763da.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/
    • https://static.usrfiles.com/ugd/9e41

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bbe.bin
16b421d1c1b177e6715b7e3286c05ed41af1712e9b2de2ae74579d43fc6f5ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBE 4992 bytes
font_01_sfnt_off00007cd1.bin
d79123f59a88212063d7e26328945bba473025f38cf967bcb3ee9f1d32b351ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 10808 bytes

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