Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06f8b4f5eb31a8f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 09:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ce05c4500db3962ce7caaf0539ded35 SHA-1: c7ac9b444968fc5bfd0b7baed31693086e876133 SHA-256: c06f8b4f5eb31a8f809ce84591d35bbe65ac0777d4fb9470536462cfcd504e85
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=bun+b+coloring+book+pdf`. The document body also contains this URL, suggesting a lure to trick users into clicking it. The file also contains a large number of external PDF links, many of which point to `static.usrfiles.com`, indicating a potential link farm or SEO poisoning attempt to drive traffic to the malicious redirector.

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=bun+b+coloring+book+pdf
    • https://static.usrfiles.com/ugd/b8c837_a85aa1e089fd48a68b3fad5229d7176d.pdf
    • https://static.usrfiles.com/ugd/c5d40f_76e7bad97243461dbad857032f009983.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_cd146dc65cb64cfc930bdb6e0fbf4fed.pdf
    • https://static.usrfiles.com/ugd/97634b_4dcfdda122e243dd903196d4049bb4ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bde45607d7d45798d5c14c2ef08990e.pdf
    • https://static.usrfiles.com/ugd/7ff653_38342e3d3e344fd49d4f0c18a64a97f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_deb879493aa64324a0062f7b02f87ef8.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/tebalizogeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/tuwopapagifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/scotland_league_1_form_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8419/files/vakinidami.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/79245159047.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcd6fcef16a249e19f03c60d404960e0.pdf
    • https://static.usrfiles.com/ugd/2e16aa_36492180c47d4163ad8303643ca22103.pdf
    • https://static.usrfiles.com/ugd/b28561_4e9612af65704b96841edfd73eb15a2c.pdf
    • https://static.usrfiles.com/ugd/34e21e_8138bf6acf6144f188a714847c7c5946.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_off0000695d.bin
0e80fd38eeb98ec258fcdd4fd75b1d1a81ba023ab5d0e76fcfeeed0e96e7db3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695D 5188 bytes
font_01_sfnt_off00007b0e.bin
4b8181314f42a191f80c86024c5f6ffd73d8ba37065d2b12f9b165e301745178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0E 10296 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.