Malicious PDF — malware analysis report

Static analysis result for SHA-256 5781f11457e5251d…

MALICIOUS

PDF

42.0 KB Created: 2020-09-01 02:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86c8d89ca7d1fad1e67d56100c9ddffd SHA-1: b94b3c34c15cff900c60ce3faa055190b77fc12e SHA-256: 5781f11457e5251d8fc3e6521a14851e55ce0917974e8c4dccdd267222e82e2b
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.ru/wix?keyword=blue+jay+movie+script+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which resolve to static.usrfiles.com. The document body, though heavily obfuscated, contains references to 'blue jay movie script pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary attack pattern involves tricking the user into clicking the malicious link within the document.

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=blue+jay+movie+script+pdf
    • https://static.usrfiles.com/ugd/2e16aa_938ce10339ac41f3bfff8440da5c9e62.pdf
    • https://static.usrfiles.com/ugd/4725f1_eab3a2494b1a4c57966edda32f944e93.pdf
    • https://static.usrfiles.com/ugd/b8c837_176b72c5ac9848aeaf8d2b9acba2282f.pdf
    • https://static.usrfiles.com/ugd/b8c837_27eceed8fa744e81b2b2206a930b00ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_8824fff3260844e684a91751329d327b.pdf
    • https://static.usrfiles.com/ugd/ca32a8_dbdcb8361f604c87a0ddb296fcbaa658.pdf
    • https://static.usrfiles.com/ugd/b8c837_d850670ac11a4000abbfad43d7352e1b.pdf
    • https://static.usrfiles.com/ugd/6924eb_ca3c4314b8ef4e9cb2766f2d8272016a.pdf
    • https://static.usrfiles.com/ugd/79e5df_581434ef1bd945af844c98758c3f4ee3.pdf
    • https://cdn.shopify.com/s/files/1/0437/9443/2161/files/gamiran.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/43047209315.pdf
    • https://cdn.shopify.com/s/files/1/0450/8326/3141/files/bovekarigigijawanesikuvug.pdf
    • https://cdn.shopify.com/s/files/1/0439/0925/1227/files/bigetokozibazubojimavanep.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_off00006282.bin
f630016631824453f268b442965f2961d0b0aca198f131987f2aae0b8f8794b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 5588 bytes
font_01_sfnt_off00007583.bin
102931dcdb0a0a3fbd1a72188c2ae1efae07b64b4c66e0a806819029d3a6d1b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7583 11172 bytes

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