Malicious PDF — malware analysis report

Static analysis result for SHA-256 d594bb27086c2c75…

MALICIOUS

PDF

46.7 KB Created: 2020-09-01 12:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510280d330249e26fa238c4fc69b65f2 SHA-1: 6dff81fbe0792a02c2e751c89f333663f6dfc6ab SHA-256: d594bb27086c2c757f134467de1abb26088433c196723b7ba37796037a809840
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Binks sake guitar sheet music' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary malicious URL is https://ttraff.me/wix?keyword=binks+sake+guitar+sheet+music, which is likely used to distribute further malware or conduct phishing.

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.me/wix?keyword=binks+sake+guitar+sheet+music
    • https://static.usrfiles.com/ugd/6924eb_1e6d2096253646f6becea2c9721fcbd7.pdf
    • https://static.usrfiles.com/ugd/48f461_834350d9e5cc41bb84ac06f8059f6ecf.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf551a7e46aa44c3a958e961fa977820.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/rerexekosasunosuvobufab.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/android_10_nokia_8.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/68920085433.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/menobuxupejekomixodepuve.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/kolunupojuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6887/3112/files/dixoguzekekalab.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/fusugivolomawemivu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/10550979544.pdf
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/89743654936.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000563a.bin
448701b4cc4e813f640415b12b032cfbf311929b6df5ede52089fd0680840255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563A 3908 bytes
font_01_sfnt_off00006400.bin
2ae906a2ed7b16f94a73409e7375e4a69abff7f5be83afa9caf522e6e321a72b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 5296 bytes
font_02_sfnt_off000075e2.bin
9c8eb9b52ca59b0451026a1accc4b2995b380990c60cb71b1c68c1744287915b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 10092 bytes
font_03_sfnt_off000098c0.bin
7ec6d793d9aa4981227a0cad5b3e16e721cc44265d91c9ea938c07f463bb6ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C0 16096 bytes

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