PDF malware analysis — malicious · 4069461e1b6a2cb4

MALICIOUS

PDF

63.1 KB Created: 2020-11-24 09:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 4963ef32a784fa4e0f1b26709cb97670 SHA-1: e59713ba8f3ca74dcc8997775a23ca0ce7e85d77 SHA-256: 4069461e1b6a2cb4a6c28ba456362688e44ecde5bf3297366dced1deb5594ece

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as malicious and ML classifiers indicated a high probability of maliciousness. An external URI was found embedded within the document, pointing to a suspicious domain. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
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://trafficel.ru/strik?utm_term=rosenbaum+pocket+vision+screener+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4451954/normal_5fab57829f6dc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384160/normal_5fb371796b73c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445570/normal_5fb4a40cb6260.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366316/normal_5f8e112ba4051.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414341/normal_5fa4ff5f7a89c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406466/normal_5fa4bb12823a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382976/normal_5f916161a5352.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411503/normal_5f9688bd9d5e1.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/78967a87-f9ee-4b8b-b85b-fc7851bdab8d/bobarujegowutefonokor.pdfIn PDF document text
- https://s3.amazonaws.com/vanatul/buzzers_rhymes_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/37c637a9-f05b-4eb5-abc7-be7fbebf63a7/63265593317.pdfIn PDF document text
- https://s3.amazonaws.com/gonavo/liboto.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_off0000b79e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB79E	5540 bytes
SHA-256: `dafe8224c8c9703d7ecd68fcaed4f3fdd80fed8e2b1b56f234c5165e90008705`
`font_01_sfnt_off0000ca69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA69	10836 bytes
SHA-256: `d5f9abab8c64908dcd04b88d4830e6185f9c478e20b9f70b993fbc3f64b3f8ca`

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