Malicious PDF — malware analysis report

Static analysis result for SHA-256 566f4cd4871ebb52…

MALICIOUS

PDF

42.6 KB Created: 2020-09-01 12:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 963ce0e3c91eda4d475d07754c298839 SHA-1: 76bc02d03cdcb4edf4430f88053ad3808bc57f30 SHA-256: 566f4cd4871ebb523566a617b3ee9585c42a71d65c1e0feae408d15574326def
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=alabama+state+income+tax+form+40'. It also contains a heuristic for a PDF link farm, with many links hosted on cdn.shopify.com, including 'https://cdn.shopify.com/s/files/1/0432/7401/0782/files/beps_action_2.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to trick users into visiting malicious sites.

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=alabama+state+income+tax+form+40
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/beps_action_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/7152928027.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/anatomie_et_physiologie_du_cur.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/amitriptyline_davis_plus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9302/4158/files/kebaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2153/files/ielts_speaking_practice.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3751/files/71483277598.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c8d9e87ee584bd994147cb4599f4767.pdf
    • https://static.usrfiles.com/ugd/95089d_29d9e78b8dc440758e1451a3ac5f04f1.pdf
    • https://static.usrfiles.com/ugd/469aea_835d9b591a904b4eb0db13f7a6a144d9.pdf
    • https://static.usrfiles.com/ugd/74c34a_c630fcab94b04e21b07e847d045262fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc2cf24b7c4d45dab039fb6137843dce.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_off0000600f.bin
fdf98b1c47e4ffcab42ac9772345497459debc35d6a913ffb04a127e5a8b81bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600F 5452 bytes
font_01_sfnt_off00007290.bin
d021f3c69379688ae1eba48f9f4c4a382d2954437b3e5ddb42d53c81e2770ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7290 13912 bytes

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