PDF malware analysis — malicious · 1a614c789bcfc99e

MALICIOUS

PDF

66.8 KB Created: 2020-11-20 08:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 4272086549051a231831bbdc244e1c24 SHA-1: d67d17193552c16c831f20a444ffc105ac373430 SHA-256: 1a614c789bcfc99e432d7eae566cddac795cb04842d32f0d96788832d7312c65

96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
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://trafftec.ru/strik?utm_term=exercicios+geradores+e+receptores+pd PDF link annotation
- https://cdn-cms.f-static.net/uploads/4457862/normal_5faa1dd9516ed.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466166/normal_5fb3eb420b937.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490138/normal_5fb3e8fa61c19.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383922/normal_5f9051c86cac4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412768/normal_5f9f6049e05f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426415/normal_5f9dda1a31488.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372735/normal_5f93e8c1605e7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482638/normal_5fa830b862bf7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495526/normal_5fb2b092138d9.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/7adc8268-3bbd-4ffc-a96a-43039a769fc7/56009082431.pdfIn PDF document text
- https://s3.amazonaws.com/sonutopexaramuf/subordinating_conjunctions_worksheets_with_answer_key.pdfIn PDF document text
- https://s3.amazonaws.com/kozibowisenatu/domunimorelu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b6eaf64d-da91-4229-bda2-03425e9c92e9/tree_species_guide.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_off0000c4b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4B6	5236 bytes
SHA-256: `675565f98e02b16885115253ecfa6c110224bcd6914d773e36b8e88a5af1ce8c`
`font_01_sfnt_off0000d69d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD69D	12436 bytes
SHA-256: `6e293b5900ff8bba6e15bf4d511865d1bfb1e691c5c90228e0a65e65a5de89af`

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