Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d524e093a1d40f4…

MALICIOUS

PDF

38.5 KB Created: 2020-08-30 19:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9b18946919f21b442939fa1c2de0941 SHA-1: 2ab24d4b332d5fba7f87743b10d349fc243c4722 SHA-256: 9d524e093a1d40f46db9218138cbe7053eca2e87dfe8d969566476ac4bc108d4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains an embedded URL that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, includes text related to a product and the malicious URL, suggesting a lure for a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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/wix?keyword=baby+brezza+dispensing+too+much+formula
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/nupevumusurusisukukafixom.pdf
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/original_sin_movie_download_in_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/posagonikuxalagelajago.pdf
    • https://static.usrfiles.com/ugd/b8c837_19eb905ce2e84e5c9984de8a8255a2fc.pdf
    • https://static.usrfiles.com/ugd/74e905_c1fd96e2061d4253abf09c00e427113c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0ea56c7aa4146cd89f05fe9798ac2d0.pdf
    • https://cdn.shopify.com/s/files/1/0436/4386/3198/files/saxon_math_algebra_1.pdf
    • https://cdn.shopify.com/s/files/1/0457/0261/1100/files/84281380173.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_off0000569c.bin
1f98fa7645d895aef82c2af859a0727ba399a98adfb4e5a2d1c7e768c2d676d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x569C 5912 bytes
font_01_sfnt_off00006a99.bin
b5881ec71a284c27c25741f364e7d1c8619f4cea30d13536aee46c4055bc4530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 10324 bytes

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