PDF malware analysis — malicious · 2a610e513b4c905a

MALICIOUS

PDF

73.4 KB Created: 2020-11-26 09:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 80adb4dfc1d8996ec2795f01edcbfc5e SHA-1: 5a6d026d96d78c0a6f58f4f09f6929faee9724d7 SHA-256: 2a610e513b4c905a522e207820c0f95b728734024681318a65c91b5082e8cd30

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of an external URI and the ML classifier strongly flagged it as malicious. ClamAV also detected it as a phishing trojan. The document body and metadata contain references to the URL, suggesting it's a lure.

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://traffine.ru/strik?utm_term=5e+horizon+walker+multiclass
- https://cdn-cms.f-static.net/uploads/4478716/normal_5fa75a9e86cb3.pdf
- https://cdn-cms.f-static.net/uploads/4411932/normal_5f9de7b1c82b5.pdf
- https://cdn-cms.f-static.net/uploads/4498366/normal_5faaf88569fbc.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/naxizugenabi/88153569274.pdf
- https://s3.amazonaws.com/putelekireza/jedexifov.pdf
- https://s3.amazonaws.com/zuxadol/administrao_direta_e_indireta_questoes.pdf
- https://uploads.strikinglycdn.com/files/45389986-cb98-4488-9e91-1c246b38c9e9/6823985538.pdf
- https://uploads.strikinglycdn.com/files/1d318d8d-e9ec-457d-8889-76d2743fa4c0/satibubogonukaxi.pdf
- https://uploads.strikinglycdn.com/files/b4aa24ff-5e4f-48da-acad-3decd22a91f2/calculate_with_confidence_6th_edition_free.pdf
- https://s3.amazonaws.com/fajixe/piano_key_scales.pdf
- https://s3.amazonaws.com/paxivogedewilu/portfolio_recovery_associates_stock_price.pdf
- https://uploads.strikinglycdn.com/files/c12bcd3c-1df7-4e39-adbb-7b7b8513ffd5/ditap.pdf
- https://uploads.strikinglycdn.com/files/92f65c77-fd1e-4f78-9497-b81a922be03f/watepalixikodi.pdf
- https://uploads.strikinglycdn.com/files/e4f1d2df-4bc1-48e7-a957-be097d584544/jumaxurekuwugegivafonut.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d6c2.bin` `b2e6596ef3b65ab7df8b1d83960678dc3d407b721efbecac9dea430d1a6e4cfc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6C2	5156 bytes
`font_01_sfnt_off0000e833.bin` `88c554f8293ed5f923baa96d170a0722647fa353c180f032ca1ce7c6b407fb35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE833	10136 bytes
`font_02_sfnt_off00010b03.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B03	4324 bytes

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