Malicious PDF — malware analysis report

Static analysis result for SHA-256 466a1e1ce3cb0c76…

MALICIOUS

PDF

53.2 KB Created: 2020-08-12 18:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c4416abc5d1772c742f8cc3172aaf9f SHA-1: 74774b7ff267240e710c5afd164de5d8036a4d58 SHA-256: 466a1e1ce3cb0c76721088049e80c97039729582feb8f8105b8e39b260116878
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wb?keyword=tom%20sawyer%20pdf%20gutenberg
    • http://files.allencjones.com/uploads/1/3/1/1/131164383/lodapumivoluruzu.pdf
    • http://nifetejoj.pawsplayground.co.uk/uploads/1/3/1/4/131407921/305734.pdf
    • http://files.thedrawingboardnyc.com/uploads/1/3/1/4/131408204/0fa40b9591670.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/zavopoxuvo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/releboge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muzaloxebomasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/tugubija.pdf
    • https://cdn.shopify.com/s/files/1/0452/7433/3346/files/52561198705.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9625/files/solow_model.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/97248551598.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/67819149881.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/97441570564.pdf
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/kijuselo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/keduxutabezenuvili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.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_off00008f46.bin
55fbc008a1b721d9351e9f90491e012f36255d164582f0c9b295ccd8fd42378a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F46 5612 bytes
font_01_sfnt_off0000a25b.bin
45e9a68291d5ca433b55db63bea53ca3bbc229589e44d339e42749f506bd590b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA25B 10900 bytes

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