Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c53d549b8df2743…

MALICIOUS

PDF

39.4 KB Created: 2020-08-31 02:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54213ca1098e1339f77b87267639631c SHA-1: 9c57f2d693cad7ea9c41a21a7cfbf441fd27d038 SHA-256: 3c53d549b8df27436bbff207e2a6a6f0f89fa6a283622cf5c49ce4e546b4fe6a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wix?keyword=trails+of+cold+steel+weapons'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one pointing to 'https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf'. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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=trails+of+cold+steel+weapons
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/bodet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3722/8188/files/nationalism_in_south_africa.pdf
    • https://static.usrfiles.com/ugd/2ca09c_89b56d115b174fbc834e4f7796750bbe.pdf
    • https://static.usrfiles.com/ugd/136d07_c741687fa50d4d029e5c2444b774d33b.pdf
    • https://static.usrfiles.com/ugd/d01287_bf648d7b53b54cc28fcb728d4e2be617.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f4fad99df694fcabbcc53da8f491fd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_47b202d7a54d49bcb8fff20e4828ace3.pdf
    • https://static.usrfiles.com/ugd/cb5dea_fa05be5a75f4499586b7be2d9dc7e655.pdf
    • https://static.usrfiles.com/ugd/b8c837_e39f5220c022485ba0e63cdb5461b43d.pdf
    • https://static.usrfiles.com/ugd/5ecadc_625f83f47d47418f82deeefa328ff963.pdf
    • https://static.usrfiles.com/ugd/837d34_c27e482b9b284663991b1898df0443ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ef67c71f51941bb8e68d7c3c09ab85f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2bb73b75561047939d52aa76e6e8a4b1.pdf
    • https://static.usrfiles.com/ugd/ddb60a_f6317e139e8d4acc9f9b4b5eee99a330.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_off000051ac.bin
e21d748ad7320450636f0c0869317121621ed749d7ac934808d48792b9117e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51AC 5188 bytes
font_01_sfnt_off0000636e.bin
1d8192112375f458d58b21b82f3b6b708a59d54aa4fb01f14630775c44387294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 14844 bytes

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