Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05893367f38a5e1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 21:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b98c09645cc8990dc4e398ec741be88 SHA-1: c3faf8dd8ffd95c2d5c7ecda5366915e513dfc76 SHA-256: c05893367f38a5e1a185b712762454796bef7f8dd051a3007507d70db72001be
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_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that the document is designed to host a large number of links, likely to lure users to malicious sites. The presence of the URL 'https://ttraff.ru/wix?keyword=fantasy+forest+story+breeding+guide+eggs' further supports this, as it points to known malicious infrastructure.

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=fantasy+forest+story+breeding+guide+eggs
    • https://static.usrfiles.com/ugd/b8c837_c8248b4693e04bb9804f58e2321b17a5.pdf
    • https://static.usrfiles.com/ugd/b4a829_8df34b11a7034470a67a7809355eb177.pdf
    • https://static.usrfiles.com/ugd/8b9728_01e6d9ba9a9c425586dec48f6aec3331.pdf
    • https://static.usrfiles.com/ugd/0286dd_bd383e8429d34b498f9f88fb2f5a632b.pdf
    • https://static.usrfiles.com/ugd/8b2c09_ce9df6fef37a45a78cba9849b4c307b1.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/xidedow.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a42262263df4cbd8bf878a3eda5f33c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2d3ad00f82e41b29ca32be804017d62.pdf
    • https://static.usrfiles.com/ugd/b8c837_aeba14b6879c43c8a61d852a8f1d1ae3.pdf
    • https://static.usrfiles.com/ugd/b8c837_067fd5a819054fd1a5076994dc77ec65.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/tendinitis_aquiliana_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0437/3472/8853/files/coleman_6250_generators.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_off00006c33.bin
9f98d1467ca323bbcb2594404406f3eac94a37ff693aabf027463f111612555d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C33 5240 bytes
font_01_sfnt_off00007e18.bin
0f45f7e87e7b5891b5341c94670a181188621be3ca57d938c30d72b09eb024a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 10344 bytes

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