Malicious PDF — malware analysis report

Static analysis result for SHA-256 381a22db5ad6296c…

MALICIOUS

PDF

45.4 KB Created: 2020-09-21 03:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67d8f748abf8f9a19a5b803d3c984f2b SHA-1: 4931ef6f53fe692c2be6c063349ee1c8d034e986 SHA-256: 381a22db5ad6296c6dc41ecf1db80d6529d59df4a0b04820d68b35202fcede45
60 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, pointing to a URL promising 'free robux'. The document body also explicitly contains this URL and a lure related to 'free robux generator 2016'. This indicates a social engineering attempt to redirect the user to a potentially harmful website.

Heuristics 2

  • 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.
  • 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=free+robux+generator+2016
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/polar_cylindrical_and_spherical_coordinates.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/38566195220.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/91796279572.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/battle_monkeys_mod_apk.pdf
    • https://dd1f0129-8a03-4bae-bb25-b9261d7eca3f.filesusr.com/ugd/941881_0530d1dc10294e5497081776d055498b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8362/files/mirud.pdf
    • https://6de3efd3-904d-401d-92ad-934875f46ee9.filesusr.com/ugd/bf650e_33ca4cd2f8eb4802a5159ebfeb2b696b.pdf?index=true
    • https://ab9ef876-9552-490c-8978-8a4f09e70439.filesusr.com/ugd/7e84b7_1080db418a5142899ac1035d2e1571f6.pdf?index=true
    • 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_off000073a7.bin
88a9d9087deef2c997ea3b2e3340d2fa20f320346e81985269281b9c7ece1afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A7 5284 bytes
font_01_sfnt_off000085c4.bin
34fb8645ca15862a73a1eaacdf169880bfe8d69c5ae0c8d2cc3a20006ad23e64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C4 10484 bytes

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