PDF malware analysis — malicious · a7d07249f649d006

MALICIOUS

PDF

65.9 KB Created: 2020-11-10 10:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 81014bd3fdac3815fda956b664fe4c97 SHA-1: d5bcd621d64a9064524bf0a544926bec742a733a SHA-256: a7d07249f649d006063c123cef603d1f77afa9367f511a9bdb1af82094720433

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and 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 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://traffmen.ru/strik?keyword=skyrim+onmund+request In PDF document text
- https://cdn-cms.f-static.net/uploads/4366311/normal_5f8716cd54e8f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374211/normal_5f88d87868867.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368478/normal_5fa0fb40df393.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367916/normal_5f89b0dda1828.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428052/normal_5fa599fa9968e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456119/normal_5fa66ff583bf7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389384/normal_5f92571c46e50.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366000/normal_5f890e5bbff80.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/pazifetanegapu/replicable_definition_psychology.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d91ab35-e910-47d6-81cf-c5f637e7a6f7/43504408737.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_off0000c2f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2F6	5124 bytes
SHA-256: `a0f79479319b01fc6cd2688a2dc69999f961d65ea19e66b6efe193737cd638fb`
`font_01_sfnt_off0000d458.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD458	11180 bytes
SHA-256: `d14e863dfe832696bdcbdb0b4c9e958dac8fc467e5fcb51de9bea15884cfd21a`

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