PDF malware analysis — malicious · 8d855bf748490d28

MALICIOUS

PDF

68.7 KB Created: 2021-01-03 16:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 470a21db811bd7939c782515ad730620 SHA-1: 636ce9e9e8226e41591c3d7f9d7f548476d263bb SHA-256: 8d855bf748490d285755dfdde7bbf8f55805216b07dac88494f3f6d412875c84

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one specifically pointing to 'traffking.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

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://traffking.ru/123?utm_term=vista+del+lago+high+school+moreno+valley PDF link annotation
- https://cdn.sqhk.co/rawegili/ohcCA91/sales_management_jobs.pdfIn PDF document text
- https://cdn.sqhk.co/titipubaduw/jgXjbIE/xixegesolezejededorepu.pdfIn PDF document text
- https://cdn.sqhk.co/sekigozujeme/Ehenn3E/world_war_rising_hannibal.pdfIn PDF document text
- https://cdn.sqhk.co/zisubiziwu/egfVxnl/brake_shops_near_me_open_now.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387938/normal_5fde3b0a04439.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459166/normal_5fb40c6610079.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/zaxawetawupo/41323797757.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a3e8bf22-cbcb-4e26-ad24-a279f5e96fe2/73827640374.pdfIn PDF document text
- https://s3.amazonaws.com/dadupawo/lagu_aladin_tripo_remix.pdfIn PDF document text
- https://s3.amazonaws.com/jajoxulabojaso/disobibagedowevuziniroxu.pdfIn PDF document text
- https://s3.amazonaws.com/jajoxulabojaso/xosut.pdfIn PDF document text
- https://s3.amazonaws.com/lososimap/ceo_impact_on_company_performance.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_off0000cb58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB58	5480 bytes
SHA-256: `1a00d9c2674764c5302fcee526b355e6532f64bdcc4296310f399fdc1e678658`
`font_01_sfnt_off0000dddd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDDD	11644 bytes
SHA-256: `ba6c7042c0bf741c69ee2d7f03eb60e493a38a8f6806b0437cd639e581c912a7`

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