Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d3eadac4646ceee…

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 09:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96beacb65f4074b63e866bb96776a231 SHA-1: e5dcf50a584ff22208d5ab21cac66b78f89be8d3 SHA-256: 8d3eadac4646ceee74874baa3f636b1c044d63a0495010b06a01027e99ca05f5
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as a search result for a 'Bose soundlink micro manual pdf'. The document body is heavily obfuscated but contains the same URL. The presence of a malicious redirector strongly suggests an attempt to lead the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=bose+soundlink+micro+manual+pdf
    • https://static.usrfiles.com/ugd/67e251_5dd8d6b512cf4fb8b30ec637ef248170.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ae88f32c82d4561a969baeaeb101fa2.pdf
    • https://static.usrfiles.com/ugd/b42fd6_26385a4c2d1e402393e154ca52408e80.pdf
    • https://static.usrfiles.com/ugd/822ecd_19f336300916438d9d578379897dd339.pdf
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/bitegagenuvosaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1709/2769/files/snapper_lawn_mower_parts_uk.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2454/files/57452524708.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/fowuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8673/3727/files/37117121270.pdf
    • https://cdn.shopify.com/s/files/1/0434/3771/9717/files/amiga_date_cuenta_gratis.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_off00005800.bin
63fe9652b3f9d523b06e9de50fed705a8abe480df888ebcc37d0ae0b41b843df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5800 5416 bytes
font_01_sfnt_off00006a4c.bin
1936adc405b6508ed865593f45caee490f1d68e95ba1cabb5cc4646847d637ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 12488 bytes

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