Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bbd96738be0705b…

MALICIOUS

PDF

47.7 KB Created: 2020-08-31 12:04:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ebf6ca75e683913e72529fb6db868ae SHA-1: 48246b4c70f935c70b951c32d59539db815b86f0 SHA-256: 8bbd96738be0705b8f285690c34b47f6aae89105fea1b1fe2f0388aae7a1a8cc
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=bmw+x1+driver+assistance+package'. This indicates an attempt to lure users to malicious infrastructure. The document body also contains this URL and a list of other URLs, likely part of a link farm designed to improve search engine ranking for malicious content. No scripts were extracted, and the document body's content is largely obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.ru/wix?keyword=bmw+x1+driver+assistance+package
    • https://static.usrfiles.com/ugd/3bca44_1bba959913d64a69ae98d8ba51263d3b.pdf
    • https://static.usrfiles.com/ugd/cac9e4_c5f1a6eecdd04722b3a21c62d07e3621.pdf
    • https://static.usrfiles.com/ugd/18f527_c6e95702a58740d98e94bccb050871e1.pdf
    • https://static.usrfiles.com/ugd/55cc32_b59f49515bef4b7eaa584d6db54e172d.pdf
    • https://cdn.shopify.com/s/files/1/0433/9059/9319/files/boogie_woogie_country_girl.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/22._1_disclosure_form_illinois.pdf
    • https://static.usrfiles.com/ugd/599026_41f0cdfad01641088cc346f6625a2c31.pdf
    • https://static.usrfiles.com/ugd/4725f1_4b4ae5e5e7b74326abee05053c0f96b5.pdf
    • https://static.usrfiles.com/ugd/911c12_30dae49982844d3ea06419a248d85730.pdf
    • https://static.usrfiles.com/ugd/d01287_88ae5bd1241149619079b8aa2811d00b.pdf
    • https://static.usrfiles.com/ugd/270e53_50bf54b6c67348c59b70f2dc226256a4.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_off0000620b.bin
69bc876b1f2b5fad33186baa4804d8a938db9579aa3d4e19a323b339d38ad8cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620B 5744 bytes
font_01_sfnt_off000075a6.bin
164a434955c90d74b18128d1c18934a3612a28675e0de929ed0f35e026c34cb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A6 11240 bytes
font_02_sfnt_off00009b4f.bin
75fb5eda6c80430b94b20cb0daa906e0e98a9f633c3ecfcf71c743d7414a59fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4F 16076 bytes

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