Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc52c22e9db747ed…

MALICIOUS

PDF

43.5 KB Created: 2020-08-28 22:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c1c851c9ed62c1b0b1d7b08677aa9b4 SHA-1: 217062ff6230d7d2ae8c4f040477f48c67e900ce SHA-256: dc52c22e9db747ed287d955b877f7360ecba4e5d72f218c9fa5c0d178d092444
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One critical heuristic identifies a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=a+shade+of+blood+summary'. While many other links point to benign Shopify domains, the presence of the malicious redirector and the sheer volume of links suggest a coordinated effort to lure users to potentially harmful sites. The document body appears to be obfuscated or corrupted, providing no clear textual lure.

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.ru/wix?keyword=a+shade+of+blood+summary
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/adjetivos_comparativos_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6488/files/28106148159.pdf
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/how_to_merge_docs_together.pdf
    • https://static.usrfiles.com/ugd/b8c837_a70e80a52f3a4c23bb7641c38ced28af.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ca733eb7ac848cf887eb8202189f8c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_782af9f86f0f42eb96f5965a607cb2f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_879b8725eb8b4873a9972f7b9620de61.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.pdf
    • https://static.usrfiles.com/ugd/b8c837_3be500aae3ec4f30908e389f6d583f57.pdf
    • https://static.usrfiles.com/ugd/b8c837_f700d46583144fc38939bec58969a510.pdf
    • https://static.usrfiles.com/ugd/b8c837_09019ddf907f4121ab5fd2c0154ea5a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0e989ece0c043408877d2cb320f75f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_8074e4e6fb15479d8a3e200b9c09d4bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_811a76de6e2a46d895548fab17035b52.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_off00006c47.bin
ad2926dfa1731cdb85ed79ee649345e7ded628a5890f65bbf0e6becb6ddb3aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C47 5380 bytes
font_01_sfnt_off00007e70.bin
bcfce1216edddb52eab7b0b87309f80c7120ef0acb49e36d0607ada4eb7825c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E70 10392 bytes

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