Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fcd9c28e440c4c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-31 15:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e6f7b66126c114ac66adab3dc66b49b SHA-1: d6396ce524e846859bb4b115381644070a96020f SHA-256: 35fcd9c28e440c4c173b065ffeea6ef2698aa4f1aba0b3b2e4e96dcf55b77690
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to distribute malicious content. One of these links, https://ttraff.cc/wix?keyword=jinja2+render+template, is identified as a known malicious redirector. The document body is heavily obfuscated and contains what appears to be junk data, along with the redirector URL, suggesting a malicious intent to direct users to harmful content.

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=jinja2+render+template
    • https://static.usrfiles.com/ugd/b56239_6757b3d72d014beebf95f6185bfbfe88.pdf
    • https://static.usrfiles.com/ugd/b8c837_03fabe0c4f734b85b60c8473cbeac064.pdf
    • https://static.usrfiles.com/ugd/5438e3_6d30b1f7c38747668236127910fbc7d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_c3f3873bd5d94985827907ad64daa3e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b1e24127d5c4175b889c175a960c520.pdf
    • https://cdn.shopify.com/s/files/1/0432/3567/2219/files/lasatotaguranom.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/14188921408.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/damugegajofiparekumug.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/71667000074.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/18082407173.pdf
    • https://static.usrfiles.com/ugd/a18aa6_ace4f6451a56404abacc85ee81931daa.pdf
    • https://static.usrfiles.com/ugd/b8c837_81dc683b970c48aca77afce710b8cbcd.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/39175795125.pdf
    • https://cdn.shopify.com/s/files/1/0437/3338/5381/files/inquisitor_greyfax_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/31138634705.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/mevemusulagatogo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/two_weeks_lyrics_all_that_remains.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_off00005f8e.bin
7868f83465687a5e23aabc0baa7deeacc15335a4ca99b624e10381ec7f73d156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8E 5124 bytes
font_01_sfnt_off000070ec.bin
6e16453e839d80b5b89cc9ad8537779455c50d3dbf8ac18e5ff29de09e76cb5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EC 13516 bytes

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