Malicious PDF — malware analysis report

Static analysis result for SHA-256 37bd66aadd21887e…

MALICIOUS

PDF

48.9 KB Created: 2020-08-24 20:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcaa8b283bf350a5196b1d3e91a33f3 SHA-1: 1f8a4146cb936a2b48876f420085a53b2db5b04c SHA-256: 37bd66aadd21887efe93ccd59866ea4b8483b6e5129804ed9d02f662fd39da99
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with many links pointing to various PDF files hosted on Shopify and other domains. One of the primary links, 'https://ttraff.cc/pify?keyword=after+effects+2017+direct', is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting an attempt to trick users into downloading potentially harmful content.

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.cc/pify?keyword=after+effects+2017+direct
    • http://files.greaterthingshealth.com/uploads/1/3/1/4/131437627/31c11bf9f5649d.pdf
    • http://files.readyourbookcase.com/uploads/1/3/1/6/131606349/7746621.pdf
    • http://files.vintagemarimbamusic.com/uploads/1/3/0/7/130738484/mamoxen.pdf
    • http://files.gosportstiming.com/uploads/1/3/1/4/131437669/16e5204c.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/abecedario_letras_goticas.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/2003_toyota_highlander_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/14328563441.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3330/files/barwon_water_annual_report_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/nuwop.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/jijorobajowuda.pdf
    • https://cdn.shopify.com/s/files/1/0431/8252/2517/files/vezefutulozuzusuwus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/40101568330.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7474/files/aha_2019_poster_guidelines.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_off000080cf.bin
d295dfa55f7c3b86208e37c47ea2e724f17fb9e26e9230e333e0de7dc906b62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80CF 5168 bytes
font_01_sfnt_off00009288.bin
c10d418f99dbe7e4f685f0a3a0d965918a53ad5fac4d1c8066cab359db1ab3e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9288 10560 bytes

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