Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c2447ea2dd7008…

MALICIOUS

PDF

50.8 KB Created: 2020-08-29 16:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7111b3fae6c3a9c2b2088818cb19237c SHA-1: fbf3812a5f1bebf7879c8dd2a9fcfc575038cba7 SHA-256: 39c2447ea2dd70087c45b69b4c48c6059196fc9bed261874a4306281814c8464
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text fragments that appear to be part of an error message, likely intended to trick the user into clicking the malicious link. The primary malicious URL identified is https://ttraff.cc/wix?keyword=r+encountered+a+fatal+error, which is used to redirect the user. The presence of numerous other links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to obscure the malicious destination.

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=r+encountered+a+fatal+error
    • https://cdn.shopify.com/s/files/1/0436/7846/6201/files/dian_hanson_books.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5824/files/57390010134.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/24510117715.pdf
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/wokixoginekituve.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cb0cda1480f47419fa40babc8d9a77b.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/idontwannabeyouanymore_lyrics_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/5405406336.pdf
    • https://cdn.shopify.com/s/files/1/0428/3927/7734/files/19172213645.pdf
    • https://static.usrfiles.com/ugd/b8c837_09019ddf907f4121ab5fd2c0154ea5a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ba09f16259d4b928415ae6671beac35.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed2e180409194f98bff96c534e57243b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a969b4a9c56432db7f779473ec23d0c.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_off00006cc5.bin
1e7964ebf0f65e5aaa96db3baf72dac225789a29c9a78131af6d3fd3e66debd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC5 4680 bytes
font_01_sfnt_off00007cb3.bin
9720e7b47c4d66f102bec9129996dabdfd6826baa0a531c2ed77b77bdc705a4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 16804 bytes
font_02_sfnt_off0000b060.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB060 4324 bytes

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