Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aecc8a03205befc…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 22:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82d0c8a0002543fb4fa988d43068a0a3 SHA-1: 30b679ce22f67d8194ed6668f2d9c6e6d3ec1b5e SHA-256: 9aecc8a03205befcdba719b634d0a2511c9d0118c78ce9c18c163ef1902032d4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=pokemon+crystal+lugia+walkthrough'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/b8c837_40427c1de91b472eb12c545b3c415cf4.pdf' being the first identified. The document body, though heavily obfuscated, appears to contain references to the lure topic and the malicious URL. The primary attack pattern involves redirecting users to malicious infrastructure under the guise of providing information.

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=pokemon+crystal+lugia+walkthrough
    • https://static.usrfiles.com/ugd/b8c837_40427c1de91b472eb12c545b3c415cf4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5d4cabc4dc1441cb65d253a026401b7.pdf
    • https://static.usrfiles.com/ugd/d17951_ec595cbe8ec946c5b08728a695e7cba3.pdf
    • https://static.usrfiles.com/ugd/b8c837_b110cfcaee064105be01a87234f9ce4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_02aa42f81d644e0993de17950c2cb1a6.pdf
    • https://static.usrfiles.com/ugd/902d29_0ef1a8552cff44e195320031c9fd5f5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/0725/4439/files/bafugusekakipesuwajawebid.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/622209278.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/chicken_and_dumplings_paula_deen.pdf
    • https://cdn.shopify.com/s/files/1/0454/7723/2790/files/capitalist_realism.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/84014659881.pdf
    • https://cdn.shopify.com/s/files/1/0436/8941/0713/files/kanujan.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/64285281368.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_off0000667d.bin
23f043060d9be1e253444df1362ef135e7508914de9d0c02f19043fcab7b2282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x667D 5472 bytes
font_01_sfnt_off00007900.bin
c2f3cb34cd515ba515e69373541a57e1ddb28c4b3f812d0b899aa0e5e2f852e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7900 10108 bytes

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