Malicious PDF — malware analysis report

Static analysis result for SHA-256 deab00585577cc1c…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 05:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0245fa6721b859a35ce3760da497c795 SHA-1: ebc7a064679935de1d88705cd02616a42b11d8d6 SHA-256: deab00585577cc1cf158ea869a5aa222040b8f8abd326d6b6f61914605ecaddf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=ages+of+vikings+apkpure, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL, suggesting an attempt to direct users to potentially harmful content.

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.com/pify?keyword=ages+of+vikings+apkpure
    • http://vupetoxo.2ndhandranch.com/uploads/1/3/2/3/132303382/9154236.pdf
    • http://zatisexat.lovelaughterandreallife.com/uploads/1/3/0/7/130776131/9920680.pdf
    • http://files.cuctf.com/uploads/1/3/0/9/130968984/4112898.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8611/files/wafelopimefix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0318/files/gmat_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/fokuwelajo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/73665893987.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/36931754068.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/63779784767.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/rasudeloxakix.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/betukupomijor.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/kotor_2_hk_parts.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/84688168773.pdf
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/nifepeburet.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_off00006d94.bin
d6f97c08b7981def59cd4d0f2f832626cd15df61ffa7b1c4dc4962347f6c3a9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D94 5152 bytes
font_01_sfnt_off00007f3e.bin
d0f19bbd9ea8cdf68ea464a227121b9c6414df4aae90a9cf872e98633811ec27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3E 10760 bytes

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