Malicious PDF — malware analysis report

Static analysis result for SHA-256 83db84a6d987ea22…

MALICIOUS

PDF

39.7 KB Created: 2020-08-01 19:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76a7c7d6e5a32681cdc49b2c15a89eb8 SHA-1: d8d748470d5077b3e526baf300752127491a41df SHA-256: 83db84a6d987ea220e4acd2140c958ec06bb8a288f690e34e6ad9aa799db3303
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=mega+man+x+rom+hacks'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. The primary goal appears to be directing users to malicious infrastructure.

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=mega+man+x+rom+hacks
    • http://files.keepthomascountybeautiful.org/uploads/1/3/1/3/131383383/zanikobideton-jupupa-lebux.pdf
    • http://files.reveirterlabradors.com/uploads/1/3/1/3/131379402/6c0000.pdf
    • http://files.inki.co.nz/uploads/1/3/1/8/131857756/webavukazixile-jebez-numuxumi-jefij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/50514715387.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/xagokox.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/xisorujubus.pdf
    • https://cdn.shopify.com/s/files/1/0439/9883/8942/files/pogibanedowunipegar.pdf
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/d3._js_heat_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/telokawukikotenubi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/48869177701.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
    • https://cdn.shopify.com/s/files/1/0432/2361/3595/files/xodukutiwilifajimolidaruv.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_off00005ed0.bin
401c9aca5d84f132b4c68406bb39883084d24f11c547babce75936fc9b3470b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 5316 bytes
font_01_sfnt_off000070ce.bin
2dce480f2baa9e60565f5c878695bc11f334d7b3227aaf8a6acc4cad895144d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CE 9792 bytes

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