Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1cde87d06a1a86…

MALICIOUS

PDF

38.9 KB Created: 2020-08-04 09:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c7b2d1cb544b82bcfaab4e3552c9858 SHA-1: 139c2cd00ff92fd56c98be3a8af708f2e0abfc00 SHA-256: 7e1cde87d06a1a86cbbb69530c7971ce3ddef304c13aa397e33fc49688056860
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though obfuscated, contains text that appears to be a lure for a 'Braun coffee maker manual'. The primary malicious URL identified is https://ttraff.com/wb?keyword=braun%20coffee%20maker%20manual%20kf7150, which is likely used to redirect the user to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=braun%20coffee%20maker%20manual%20kf7150
    • http://files.workinnvision.com/uploads/1/3/1/3/131384018/zudemesenodevakani.pdf
    • http://tuwiruta.proflightuas.us/uploads/1/3/1/6/131636655/355f9eee793.pdf
    • http://kigitoka.icaisfo.org/uploads/1/3/1/4/131437812/detidibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/70331038879.pdf
    • https://cdn.shopify.com/s/files/1/0437/4455/9258/files/45076446720.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/51548623952.pdf
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/buguguxovovugosaxef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/24580222518.pdf
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/78651527522.pdf
    • https://cdn.shopify.com/s/files/1/0433/8699/4855/files/we_are_anonymous._we_are_legion.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/sefupuvuzoxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9913/files/favubunafi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/begesulugerufam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d5a.bin
d2b0cf6d86e24608f81985304d39578d457e057aa8df1b9499c56e79828da0f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5A 5116 bytes
font_01_sfnt_off00005ead.bin
680e802bdcf920ce0515f5fa7bb0e16d4e5515a6f9e9d23b0aea578c61bc4d0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAD 9840 bytes
font_02_sfnt_off0000803e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x803E 4324 bytes

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