Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e4621d3ac0c7f9…

MALICIOUS

PDF

183.2 KB Created: 2020-08-15 02:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f339ec3692f8431023d555e06277df9 SHA-1: 75a212fac19c9e23c79eb116ad26fc099078b20c SHA-256: 85e4621d3ac0c7f92254e7310e88bff187ab9c2d9e1df4a815cb7edeeac64b43
100 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bhakti+geet++ringtone'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates that the document may be part of a multi-stage attack where a password-protected archive is delivered, often to bypass gateway security. The file type and the nature of the URL suggest a phishing or malware delivery attempt.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=bhakti+geet++ringtone
    • http://files.microneedleregulatory.org/uploads/1/3/0/9/130969209/giwuvizalapunemaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/25001058775.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/45301985018.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/pezajepumupazadur.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/xawukadubuponuxoxavefuxiw.pdf
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/if_statements_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/arctic_air_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/62307277831.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/9788391418.pdf
    • https://cdn.shopify.com/s/files/1/0440/5159/5429/files/understanding_annuities.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/20306546850.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6051/files/canada_map_download.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_off00029174.bin
a510482f91c19cce019f6fe1ecb9e8ed17b5bf31ce693d5133c9b2d2f092d8ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29174 4848 bytes
font_01_sfnt_off0002a1ef.bin
da70ab6ac6ce02a21365b9b59911a06dd3d53848f7ab3b299fa992b9bc1f31b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1EF 14776 bytes

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