PDF malware analysis — malicious · c1b3e35c35df7db4

MALICIOUS

PDF

73.5 KB Created: 2020-12-28 05:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: eb5cef7425df1c313ea7ebaf3e679a11 SHA-1: 9a5b6b242d93f2d198c1adf253349e12eeffe905 SHA-256: c1b3e35c35df7db4bffea49cf32bd7b4158eff62f41a9b680070b4bc91b537c0

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. The presence of an external URI pointing to 'traffine.ru' suggests a phishing attempt related to Medicare coverage. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/aws?utm_term=medicare+part+b+coverage+form PDF link annotation
- https://cdn.sqhk.co/latipizi/SIT3wr6/notepad_like_app_for_windows.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469634/normal_5fbf407df0841.pdfIn PDF document text
- https://cdn.sqhk.co/dipujabuxiw/f9hagdv/95048993362.pdfIn PDF document text
- https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/kuwinimogevif.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390328/normal_5fadc71b584f6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450154/normal_5fab8fd3e5972.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/midipes/vuzekibogeligevuribof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f59faa1e-d50d-4397-8655-253267e7cab2/wezevukowakirinofokikuvi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d3efd742-26ee-4302-a658-399523f44954/psionic_entity_stellaris_reddit.pdfIn PDF document text
- https://s3.amazonaws.com/forupokisip/78690620437.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_off0000e2a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2A3	5472 bytes
SHA-256: `a9b951ee41e4967d2558263d5eb0705e12a9f2e98a2d44a6a59d956db04ac423`
`font_01_sfnt_off0000f542.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF542	10764 bytes
SHA-256: `79e41cf86508393eaab62cd67544524bcdf498e2e29792d4aeb3aefce882c70c`

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