Malicious PDF — malware analysis report

Static analysis result for SHA-256 217bf32bb8eb3bd3…

MALICIOUS

PDF

56.3 KB Created: 2020-11-04 01:54:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 08af3f43b4583474383e533b66ce6237 SHA-1: d8a075a638f3bee84fc7928cb85c9ab89d1148ba SHA-256: 217bf32bb8eb3bd361fa0ee8f0bd0798e7e3ed5f676e440c59a851b36f1c9210
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?keyword=task+analysis+examples+for+children In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5f8e9d8c32f57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f895b62d31a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390328/normal_5fa1cefd84228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5f98f9f307e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f8b3a8922673.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5f890d2f5468a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_5f9a4b9aa2729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5f9bf52d6e0f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5f9c0cebc2c16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e886659f-6117-4bb2-92fe-07a254830b65/77375560029.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE2 5576 bytes
SHA-256: ed19a5f99620b9528063def82c242fe80b9f2418edd7621c9a96ce01247827a0
font_01_sfnt_off0000b0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C1 10376 bytes
SHA-256: 414572f96dc56c7560058437a8c65d25838ba3e94b34761cc56db7e7b6ae3624

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