PDF malware analysis — malicious · 96c0af86cb845cf0

MALICIOUS

PDF

73.7 KB Created: 2020-11-14 04:07:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b3b1ef67fdce3050f3bbc512687c67cc SHA-1: b4270392549ddebbaba8162e1d6b62ffcf44b8fb SHA-256: 96c0af86cb845cf011b0bf162bab19e937491c33cc8cc33ff865d21b549801e1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=reminder+email+sample+to+vendor', which is likely part of a phishing lure. The document body, though heavily obfuscated, suggests a 'reminder email' context, reinforcing the phishing attempt. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests an attempt to redirect the user to a compromised or malicious site.

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/123?utm_term=reminder+email+sample+to+vendor
- https://cdn-cms.f-static.net/uploads/4375886/normal_5f9427c27e50f.pdf
- https://cdn-cms.f-static.net/uploads/4369657/normal_5f9d44114c399.pdf
- https://cdn-cms.f-static.net/uploads/4453741/normal_5fa1291d98c38.pdf
- https://cdn-cms.f-static.net/uploads/4390074/normal_5f990d87028c9.pdf
- https://cdn-cms.f-static.net/uploads/4412154/normal_5f9e03c2625fb.pdf
- https://cdn-cms.f-static.net/uploads/4366335/normal_5f87641b99368.pdf
- https://cdn-cms.f-static.net/uploads/4403417/normal_5f937cdc25268.pdf
- https://cdn-cms.f-static.net/uploads/4482671/normal_5faf14e700db6.pdf
- https://cdn-cms.f-static.net/uploads/4376362/normal_5f8f459270308.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/bewibiwat/20084713997.pdf
- https://uploads.strikinglycdn.com/files/00b444cd-08a0-41bf-b20d-8ab71de08156/zuloratewobemego.pdf
- https://s3.amazonaws.com/suzeduselu/concepto_de_materialismo_historico.pdf
- https://uploads.strikinglycdn.com/files/b2742ae4-d7e3-4864-b9c3-c826261d2fc0/centripetal_acceleration_and_force_worksheet_with_answers.pdf
- https://s3.amazonaws.com/kakef/49904260623.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e3f0.bin` `6b23b1bf6ca482645d9db9e8db90dedb30bf34bca3e4af26c09825f723601749`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3F0	5172 bytes
`font_01_sfnt_off0000f574.bin` `fe5e613270503a96aa37932e444388d003f597f870e337030408febe7b00e39d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF574	10568 bytes

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