Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a663e026b19a72c…

MALICIOUS

PDF

39.8 KB Created: 2020-09-06 21:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c03c4285a0553d2874518c90e7767b95 SHA-1: 07bf0e4883852fc02b7d39b8f8f6812af2b8b33e SHA-256: 8a663e026b19a72ca8f738cca326d3ffced0d70abeee01a66eebc190509a3381
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=aoe++win+10'. This indicates an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on static.usrfiles.com, suggesting a link farm or a method to obscure the primary malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=aoe++win+10
    • https://static.usrfiles.com/ugd/b8c837_8b7f2b0c200b401ea62610955f037079.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7abb618046a4f458bb58e871afd2125.pdf
    • https://static.usrfiles.com/ugd/1f2646_26d55f3f09ae4958a7f79ca5580d9306.pdf
    • https://static.usrfiles.com/ugd/54fa57_3c8d40699df04f76b61a2595370c82d5.pdf
    • https://static.usrfiles.com/ugd/b910ae_248ebc37bf8a403ab448855411106a76.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cae11349c0f48c1aa905d019fc1a3b5.pdf
    • https://static.usrfiles.com/ugd/3e5db3_8a84d4ed8a9344c18a8e7b9bf817b469.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_834c107ffe924d1abd4da8a7b1debce4.pdf
    • https://static.usrfiles.com/ugd/bd5c68_60d6cfd245d9488381a68ddd6543d33e.pdf
    • https://cdn.shopify.com/s/files/1/0437/3463/0549/files/gixuvukibizogir.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/73044954753.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/tusebegalodumajis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/vogomelurufebogoruku.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_off00005f6b.bin
1400468fe6957a0eadc8960308d0196ac6ab3d7651ed316a12454f7b1636f58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B 4436 bytes
font_01_sfnt_off00006eb1.bin
3452bd753399b99440668070b92ffadd5505739f672752617b5ed6f2e8fc6769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 10872 bytes

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