Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a8efcf59c66970…

MALICIOUS

PDF

42.4 KB Created: 2020-08-30 12:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab1f5a6e08d32af18406bbd7b5d29ef SHA-1: 4af2fa1bc2c2b645bb371a68f8f3784592755a9d SHA-256: 91a8efcf59c66970159b109607879ce4ab5e98dbc5f3b8cf5473cb48e3126142
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and other URLs hosted on shopify.com and static.usrfiles.com, suggesting a link farm or redirection scheme. The primary intent appears to be directing the user to malicious infrastructure via the ttraff.com URL.

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=star+wars+galaxy+of+heroes+squad+guide
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/81401343574.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/26936422506.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/80966042121.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb27de6cef0b4598afe0d75b800c6143.pdf
    • https://static.usrfiles.com/ugd/f84671_dbe2b504c7e84e54b8db0f1390bda215.pdf
    • https://static.usrfiles.com/ugd/0d2908_b6b595dc4e89473e89e55d61308c6e62.pdf
    • https://static.usrfiles.com/ugd/b8c837_09037ec7e8bd496e9e45fd49e8486b61.pdf
    • https://cdn.shopify.com/s/files/1/0463/2533/4171/files/properties_of_addition_worksheet_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0439/5044/0603/files/warc_web_archive_file_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/brushless_dc_motor.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_b854e8248d054f8f9675e09f8cde3e1f.pdf
    • https://static.usrfiles.com/ugd/b8c837_daf473557cde4217b9b9c2eee6f07215.pdf
    • https://static.usrfiles.com/ugd/58a813_052a87b9a7634bb88a4aa9fc471172ff.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_off000064ca.bin
830ec1a2813734d3c5f4c17cb83a185325ba1f4c35962855cf5a769b85672337		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 5660 bytes
font_01_sfnt_off0000780c.bin
eaa24dd3fcd3f43e7da479789b788d5f9a1d98ba3f2c91d47c5e5bdf3056a58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780C 10684 bytes

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