Malicious PDF — malware analysis report

Static analysis result for SHA-256 220e96f5d2469884…

MALICIOUS

PDF

33.3 KB Created: 2020-08-29 17:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4e82244dfb43781025c64b8c70baa4 SHA-1: 6738e0c06a972430996368e615fa5112a2ff0e71 SHA-256: 220e96f5d24698845032532d9ca21ccf39897fdb8a16665301543d3fd7a52d26
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign resources. However, one critical heuristic identified a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=victorian+cursive+handwriting+sheets', which is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content under the guise of providing educational resources.

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=victorian+cursive+handwriting+sheets
    • https://static.usrfiles.com/ugd/760101_250d7b9636784e1b993230cf3e72e254.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d930bf6192f4a5fbd60638776992fd6.pdf
    • https://static.usrfiles.com/ugd/b8c837_658b6e5f5b834fbfb7600d6405fdf8be.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/19924741579.pdf
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/human_anatomy_and_physiology_marieb_and_hoehn_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/7546923622.pdf
    • https://static.usrfiles.com/ugd/7ff653_bd49fe7103444507943e0af4f7282dd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_091e0d64a517449a8203e8b0dade6a42.pdf
    • https://static.usrfiles.com/ugd/b8c837_f26783c5898343659938d719a5737507.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbad77c40c464302a7f3396c96280163.pdf
    • https://static.usrfiles.com/ugd/fe83c3_97080387dcb64fc285542d17421901b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_09714c9640e64a18a20a9b21644430a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c110e82de454fb2bef28a9e1e904a6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_407ae5d3df014a7ea237ce441e1e32eb.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_off00004491.bin
ba510a6e5f5c86a62d3fad179766102de292722ddc27414ee240110f635cdf0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4491 5284 bytes
font_01_sfnt_off00005691.bin
46eee74bf545bd282225ae5d36fe71c07b50155ffa0cdc638cb38d3e27c20f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5691 9896 bytes

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