PDF malware analysis — malicious · 01f3897aaedd06cc

MALICIOUS

PDF

46.2 KB Created: 2020-10-29 05:15:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: ada3ae8292b1163c0c2d5651c4591f0f SHA-1: 403174114dea858699ed8fec2c9114abd94fabec SHA-256: 01f3897aaedd06cccca915c6ba254c27cdf3b158a43dfe655b7e69d3ab825d8b

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains references to URLs and appears to be a lure for a "treasure hunt". The ML classifier strongly flagged this PDF as malicious, suggesting it is designed to redirect users to a malicious site for further exploitation.

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/strik?keyword=founding+documents+treasure+hunt+answers In PDF document text
- https://nibobesexetew.weebly.com/uploads/1/3/4/2/134266191/tozemezorukoze.pdfIn PDF document text
- https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/0a5879a5173.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375352/normal_5f8d5919623b5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372100/normal_5f8ea55df17c4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375350/normal_5f93b14c13cf4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379053/normal_5f8b584b1a359.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366055/normal_5f875acf6efb1.pdfIn PDF document text
- https://wemugevesusufe.weebly.com/uploads/1/3/4/4/134467109/karevedutufiseko.pdfIn PDF document text
- https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/foxivom.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369317/normal_5f882814d8938.pdfIn PDF document text
- https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/2867392.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368970/normal_5f955d09b4362.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/henghuili-files2/58603895476.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/nawilofekafum.pdfIn PDF document text
- https://s3.amazonaws.com/tesodagiwor/46735801712.pdfIn PDF document text
- https://s3.amazonaws.com/kosipefojaw/37418481269.pdfIn PDF document text
- https://s3.amazonaws.com/tabobujimo/ragatufokatositidube.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_off00007193.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7193	5368 bytes
SHA-256: `2071e8e93418c303e546bc9e81c9f0e850db24c10e0a12f75d31c0db6b83c93e`
`font_01_sfnt_off000083c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83C2	11888 bytes
SHA-256: `9fcda1fa430eb69105c8ab6bea4befe129a9ed81b0e7df005b1c2bb428668b72`

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