Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef03f13a8758e76b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 18:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748a509be3af1d599fb4155f4d17cfdf SHA-1: c01b24a0c12f742b939d99c284b4c170da01eb42 SHA-256: ef03f13a8758e76b698b5489047f2ea6775068726204495f6e097b0eabd0018b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/wix?keyword=best+healthy+smoothie+recipes+pdf', which is flagged as malicious. The presence of a PDF link farm heuristic further supports the attack pattern of using deceptive links within the document.

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.com/wix?keyword=best+healthy+smoothie+recipes+pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/babolun.pdf
    • https://cdn.shopify.com/s/files/1/0435/0210/8836/files/pdf_acrobat_reader_download_windows_xp.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/bivaviviwupafoko.pdf
    • https://static.usrfiles.com/ugd/a44510_d0928a0d46fb4c7bbd2585b8b7302635.pdf
    • https://static.usrfiles.com/ugd/ec0c41_1f65ea87f66340d3998bc39d0dd90ebd.pdf
    • https://static.usrfiles.com/ugd/1f2646_2f0cec26a0c54aad9e6bffd4d7d10d22.pdf
    • https://static.usrfiles.com/ugd/0df15e_c0ea549e552b4f0e9aa33fbfe8b22e7b.pdf
    • https://static.usrfiles.com/ugd/39cb9d_6cabf8b4ed4b42978ea4ea294a5f9459.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8976/files/godafek.pdf
    • https://cdn.shopify.com/s/files/1/0448/3615/9645/files/hello_tune_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/97919054629.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38664456414.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_off000060cb.bin
0d7ee1166d3641f953d7b6b12cf426aabc518af340e60bfe305f7ed89afbbc8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 5544 bytes
font_01_sfnt_off00007387.bin
1fc81082fde79e18ab7792b7ed08a2abf55e84efff6cf686c3d1a52512e6fc61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 10524 bytes

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