Malicious PDF — malware analysis report

Static analysis result for SHA-256 50dac36c2e01e4c1…

MALICIOUS

PDF

35.1 KB Created: 2020-08-31 18:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 445a6531ff40b7a92d9d7c50d16f5fe3 SHA-1: 0daf8492fdda0cd8bc97010fe1718a1fc2ef2c07 SHA-256: 50dac36c2e01e4c1d81067c98cda0292918ac74a1e3f1849ab3678ab12389ebf
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=noddy+cartoon+hd+images'. This URL is presented within the document body, disguised by the text 'Noddy cartoon hd images', suggesting a social engineering lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded links to external resources, many hosted on Shopify. While most of these Shopify links are benign, the presence of the malicious redirector indicates a high likelihood of malicious intent.

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=noddy+cartoon+hd+images
    • https://cdn.shopify.com/s/files/1/0431/0797/5335/files/55063513343.pdf
    • https://cdn.shopify.com/s/files/1/0436/9511/2345/files/ballon_de_contre_pulsion_intra_aorti.pdf
    • https://cdn.shopify.com/s/files/1/0431/8786/3715/files/cauda_equina_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/4330272593.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/52652844502.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/punupamisewabevolanoxona.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2655/files/wefemutalevupatofilag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2828/2529/files/dibosirumuvukame.pdf
    • https://cdn.shopify.com/s/files/1/0433/5065/5129/files/eternity_warriors_2_mod_apk_2019.pdf
    • https://cdn.shopify.com/s/files/1/0468/8130/8829/files/dulesesigexasopupomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/sewipivekawagofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/86841972257.pdf
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/fisalixagalababos.pdf
    • https://static.usrfiles.com/ugd/b42fd6_51cad7bb3f7d4458a61dbcfbb951c274.pdf
    • https://static.usrfiles.com/ugd/0baf77_a57ca78d58e34ef2bbce0d7d228b744e.pdf
    • https://static.usrfiles.com/ugd/5ed537_21c36496b61b4e1ebb0c23300d123d1f.pdf
    • https://static.usrfiles.com/ugd/3b7182_4a1e1e83fb5b496fa773d638493059bb.pdf
    • https://static.usrfiles.com/ugd/45fd81_4111208b445b45be87366e6adb7af93b.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_off00004bb1.bin
f12bcae7f47e799b305092608d8ce41728e64ef695c35931456302698a9d254d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB1 5392 bytes
font_01_sfnt_off00005dea.bin
3834bc8aa8db16ed3560ffb7eb238ec932a3c5a228c5f5f440f2193419b5e101
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEA 9784 bytes