PDF malware analysis — malicious · 9e7b62131eeb24b4

MALICIOUS

PDF

83.7 KB Created: 2020-11-04 01:26:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: a3c99090e590f2c03b2988801a09122c SHA-1: 9dda6b948e62495ec53a7d5be0cc1c86b8686fdc SHA-256: 9e7b62131eeb24b44677d79f23450c6d5970b80249db68db66b154d02ae640a2

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to known malicious redirector infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also flagged the document as malicious with high confidence. The embedded URL 'https://cctraff.ru/123?keyword=natenberg+options+volatility+and+pricing+pdf' is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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://cctraff.ru/123?keyword=natenberg+options+volatility+and+pricing+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4419452/normal_5f99b4be94680.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367617/normal_5f895c541a677.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384143/normal_5f8bfd2e79a8a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368735/normal_5f890f1e094c5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366351/normal_5f92349c6cf5e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428069/normal_5fa1b941bb97b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407983/normal_5f97782ecabff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380858/normal_5fa1e232b6e5f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411709/normal_5f95a18ae6eb0.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/e4419b9d-cb6a-471d-a4e6-2837aede0a87/8712171271.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/922f2830-8743-4055-9e79-d5aadec205f8/5316389947.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/32bbb50f-9785-4c60-a24c-4dbd5f5a0e01/3920532410.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c8079fc5-7158-46f0-933e-fad0d0e82a5d/bopegodewowepagobaw.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f043.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF043	5596 bytes
SHA-256: `fe0792567b4d9c80f4111b3981b36fa194a81185f29a66b8f2ff535f85fb82b7`
`font_01_sfnt_off0001036a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1036A	11776 bytes
SHA-256: `f36eb8c2eb3d38416ee742c7d40588102be9e58a7a1b8c7187edb9feb35108ef`
`font_02_sfnt_off00012bd9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BD9	16184 bytes
SHA-256: `dcc4c0abc0890442b0fa2aa32d0d4460407ba6a80c6f9f092138d4912a9fa5ed`

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