Malicious PDF — malware analysis report

Static analysis result for SHA-256 41cdadaded226501…

MALICIOUS

PDF

37.6 KB Created: 2020-08-31 18:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f2c1c69333ffe13f2b1e552c24e96fb SHA-1: da6626790d500b3290ed2fd033ae20c205249d29 SHA-256: 41cdadaded226501522cef09e69b9f2583002407ea75c03937edc7d7fdbb82ec
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.cc/wix?keyword=aankh+marey+old+video+song. The document body, though heavily obfuscated, also contains this URL and numerous other links, suggesting a link farm or redirection scheme to distribute malicious content. 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=aankh+marey+old+video+song
    • https://cdn.shopify.com/s/files/1/0430/8244/9045/files/artificial_intelligence_a_general_survey.pdf
    • https://cdn.shopify.com/s/files/1/0436/7797/4678/files/73004936453.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/90571265751.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/airtel_dish_tv_channel_number_list.pdf
    • https://static.usrfiles.com/ugd/158fb9_bd513e5030ec491a949bcdb1570b7f33.pdf
    • https://static.usrfiles.com/ugd/b8c837_bda96b91e62445049cbdeb2cb1c3580d.pdf
    • https://static.usrfiles.com/ugd/3f80ec_dfe5728b5a184948b3f9dd52d797617a.pdf
    • https://static.usrfiles.com/ugd/a107db_f38d0e31dbb6469ebc2d14bdd54598ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_21b5a5a532714f12850f8b1957d32f77.pdf
    • https://static.usrfiles.com/ugd/7198c1_6ddf65b10cfc4f80b523203aa7e49975.pdf
    • https://static.usrfiles.com/ugd/b8c837_e62dca9eb4164cc580e4e8856dd25dcd.pdf
    • https://static.usrfiles.com/ugd/b8c837_153e1287329848209452019ea5d5b110.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_off000054a3.bin
1aa4ab3c48d7e757eaf8483cc326f7f9ef88915c38c13fdfcdefe79e4d12b88a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A3 5452 bytes
font_01_sfnt_off00006710.bin
4b0812aaafc691949bfa837c3c0cd4c0439efa956bf9ffa6214cef77d612bcc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 10180 bytes

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