PDF malware analysis — malicious · 8730d731e88cec04

MALICIOUS

PDF

128.9 KB Created: 2020-11-30 20:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 849661e3fdb94a8761ef7404d5bdfefa SHA-1: 7886d9d9d42171580c323f11ea22218e98bdf8fe SHA-256: 8730d731e88cec046e1a7546b6c7d2c72f6f0ac7744eb7d94104e4d17ef78f81

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded content, though heavily obfuscated, appears to be related to search terms, suggesting a lure to a malicious website. No scripts were extracted, but the presence of a malicious URL is a high-priority indicator.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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?utm_term=gareth+bale+wife+age In PDF document text
- https://cdn-cms.f-static.net/uploads/4480412/normal_5fa5f89030e9e.pdfIn PDF document text
- https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/xagapexeledonoko.pdfIn PDF document text
- https://darifojiwuz.weebly.com/uploads/1/3/4/5/134588766/66f1c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4426279/normal_5fc3ab893c5ef.pdfIn PDF document text
- https://donodofi.weebly.com/uploads/1/3/1/8/131856097/jememokawewopi-vuwejix.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/jubiferekaka/cocoa_beach_florida_fly_fishing_guides.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1da128bd-a421-4b5d-a098-65a8502bb271/iphone_is_disabled.pdfIn PDF document text
- https://s3.amazonaws.com/wexoteluwag/ginetofudug.pdfIn PDF document text
- https://s3.amazonaws.com/wibadinavosunom/free_letter_to_santa_template_uk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/55866818-0545-4b37-a8fb-70cf7c8ea662/student_of_the_year_2012_full_movie.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_off0001b95a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B95A	5116 bytes
SHA-256: `f9e0763dc50363f6ecef6b429af8cefcb956451da03a86ad2484c42f1b8ce0b2`
`font_01_sfnt_off0001cad7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1CAD7	13872 bytes
SHA-256: `a0e661815e482e4e3f2182b160537935327fe62997f4aaf6f690acbd80808105`

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