Malicious PDF — malware analysis report

Static analysis result for SHA-256 deadf8f5ed27c6c7…

MALICIOUS

PDF

47.3 KB Created: 2020-11-01 10:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d0f4bf4cf99c3efb3f34452d4db7986 SHA-1: 1545b44bd00952374380eb8ee7b640c61ce271c3 SHA-256: deadf8f5ed27c6c72985800a1f32d8fe9951d79a96d1e1f151ab7ad13df9ba04
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, includes references to 'Venom movie online' and the malicious URL, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/123?keyword=venom+movie+online
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/e7bf278f8f6cc.pdf
    • https://cdn-cms.f-static.net/uploads/4424646/normal_5f9b8f1d7ac8a.pdf
    • https://cdn-cms.f-static.net/uploads/4370764/normal_5f8a765caa3f4.pdf
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/3809296.pdf
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/podegu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4c1a900e-4ded-4c25-8178-5fc6d5f4a394/akai_jumbo_food_steamer.pdf
    • https://uploads.strikinglycdn.com/files/eb873a46-f7c8-4664-a4eb-39b9636b8aec/zemolal.pdf
    • https://uploads.strikinglycdn.com/files/79410b78-cee9-4a72-b22a-6062e30b1ce8/vomakenoloburunurikij.pdf
    • https://uploads.strikinglycdn.com/files/acb402a4-8ee3-473e-a574-d4b54a35cd9a/xinozixoduwevo.pdf
    • https://uploads.strikinglycdn.com/files/0558c95a-3476-4983-8a14-8f4921ece6b7/57786842246.pdf
    • https://uploads.strikinglycdn.com/files/399bfd30-7153-4ed9-a7e6-6231c7d733b3/92616804804.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf8.bin
b03dee99f42539c4d050fafd026fe9a84f9ee069977dc7f5a1b7e10c186a63f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF8 4372 bytes
font_01_sfnt_off00008bd1.bin
f8a370a70a110db5d7826efd208bbd6e26f5854915a373bd070a5b2ca30904d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD1 11056 bytes

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