Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7e0ccaee2c04fc…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 07:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 628533d1e69637114f94d92d8bcfefbb SHA-1: 73890fc95ad1ad6c79bafac9e3c6d8a1f536c9d3 SHA-256: dc7e0ccaee2c04fc6315ca256786ec6e8f0598a0c5b2edea8639df0ae7a928da
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 infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=the+greatest+salesman+book', suggesting a lure to a malicious site. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely to obscure the malicious intent and distribute the payload.

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.ru/wix?keyword=the+greatest+salesman+book
    • https://static.usrfiles.com/ugd/769f78_272756808205483b84f17c11af792953.pdf
    • https://static.usrfiles.com/ugd/b8c837_68d82d63751d4673a654b89ed94a7141.pdf
    • https://static.usrfiles.com/ugd/f96b02_5fc816dafef14e4d8809c03084bd36eb.pdf
    • https://static.usrfiles.com/ugd/c8a981_2894d4ef2ef84c8786c7ad272190280f.pdf
    • https://static.usrfiles.com/ugd/409ca8_7c0c493459154428b2e9c3ce09a27dfb.pdf
    • https://static.usrfiles.com/ugd/3aca14_c97ebbf15f9d4dbab32aa010e584d95c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7046c48c428e4ba9b66b01ef9ae738b3.pdf
    • https://static.usrfiles.com/ugd/5899d5_0787bb7d18cb4518affb319b202114b1.pdf
    • https://static.usrfiles.com/ugd/0b46e6_62c20f4965ea4684999137f327f25a52.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97a4c2bb7ae48c3aba4fe4fdf46d109.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b9e23b4b9934d2db19b0d21ea6496d7.pdf
    • https://static.usrfiles.com/ugd/cb2bed_9f1620c9a8244c54adb2851729b3e845.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/zidatavuwurikuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/9568773267.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/75606101845.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/qiagen_mini_prep_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/pabedofatiwafaligani.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_off00006adc.bin
3d457e7726dbfc534bef0509aeea8c9e523bcd96c24c45d3ba1ca9a096d10fef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADC 5252 bytes
font_01_sfnt_off00007c9a.bin
c44289614965902b1b81fba5f511942e4fc61d33d955c087ff92a69171a8c2c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9A 10112 bytes

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