Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b7476e82a71b6a…

MALICIOUS

PDF

72.0 KB Created: 2020-09-02 05:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435a53adbf9c92a5bbf78eae59cb43b2 SHA-1: eb848009d43ae51e06d2b0e0afc3b4bb3ae84560 SHA-256: 22b7476e82a71b6ac1d95f23fb70a85f639dbc79540648e5a71679358c9de285
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.club/wix?keyword=bluebeard+brothers+grimm+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to host further malicious content.

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.club/wix?keyword=bluebeard+brothers+grimm+pdf
    • https://cdn.shopify.com/s/files/1/0438/2274/3712/files/24784333192.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/87862926100.pdf
    • https://cdn.shopify.com/s/files/1/0446/2444/5603/files/29205348372.pdf
    • https://static.usrfiles.com/ugd/8a419d_93ebe56feef14660ac24284f728c8d98.pdf
    • https://static.usrfiles.com/ugd/6da380_4e2b174204a444e18cbad23724a93e6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c7999ccea14f1688f8a99001886d89.pdf
    • https://static.usrfiles.com/ugd/b58d21_408fd3c0a196421aae0be45e7102003b.pdf
    • https://static.usrfiles.com/ugd/6240f8_b0fd596c022541f29f1903dcb3f8bc25.pdf
    • https://static.usrfiles.com/ugd/cf79db_c679c3d0aebb455bbf0b00790a28249c.pdf
    • https://static.usrfiles.com/ugd/912de2_57a563e7d1644542a02daa0471d8112f.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_off0000cf90.bin
7435a46f8674425a9f1ca0d735551997cd0b7afebce8a7c51b1530d02062dc49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF90 5420 bytes
font_01_sfnt_off0000e201.bin
1aede19f3322f5bf9570eead27a01b9964c8fa0b35d194a9779e98431cd6d290		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 10192 bytes
font_02_sfnt_off000104e6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 4324 bytes

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