PDF malware analysis — malicious · 0604729c93d392bc

MALICIOUS

PDF

33.8 KB Created: 2020-11-04 03:39:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 7922e5466a7705b3dcac3c1181e27599 SHA-1: 179e16330ac408c435df4389bd246b19f07f131f SHA-256: 0604729c93d392bce0ba542628e4f9368dfddf94098bf8b95f77104ec6c8f1de

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL which likely serves as a lure for users to download further malicious content. The ML classifier also strongly indicated maliciousness.

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://ggtraff.ru/123?keyword=parallel+myths+pdf+download In PDF document text
- https://cdn-cms.f-static.net/uploads/4369522/normal_5f8a5b69e21d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390055/normal_5f8e948ecb4f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365539/normal_5f8729cde3307.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366050/normal_5f8742f11bd0a.pdfIn PDF document text
- https://vamepuruzaf.weebly.com/uploads/1/3/4/3/134352512/fd150d7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373259/normal_5f905bf6d8f80.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/megodipewukitoj/sewazu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7793b945-e347-46b5-ae6a-7405580c9d07/7334349992.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9afd404f-8dea-432e-add9-cf69c8de9684/letokafir.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5dd3d5d9-2a2b-4ccf-bb34-82010a251c8a/8005591009.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00004618.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4618	5476 bytes
SHA-256: `889dffbb92f518fdf1696f871356876c2f5df4a20dd4eaf0a0c924ece07615a4`
`font_01_sfnt_off000058a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58A4	10048 bytes
SHA-256: `842a1aa1276e411fb2dc4f262b708ee75b5f1d408c0771f7b0ba009a087cb411`

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