PDF malware analysis — malicious · 3af0f1c6eb14d43b

MALICIOUS

PDF

79.9 KB Created: 2021-06-08 23:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 2abf814d31098409d2c8a4c7594267c2 SHA-1: afa06f69d31c9c7e178c0f05e3d645daa3930b5d SHA-256: 3af0f1c6eb14d43b730d93436e32ce0705c6af3ed27af56724180013f3d69131

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to a site offering a "coin master spin hack apk download", indicating a lure for potentially unwanted software. No scripts were extracted, but the presence of the malicious URL and the phishing context strongly suggests a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://inwebjor.ru/pbw?utm_term=coin+master+spin+hack+apk+download PDF link annotation
- https://static.s123-cdn-static.com/uploads/4370090/normal_5fe4120f568b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478687/normal_60bd08ef18c0b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4385614/normal_5ff8ef983f144.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457592/normal_60542117b881f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417413/normal_6056c0b6cc0aa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386079/normal_606cc1f5b413a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470825/normal_60be505dd9380.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380214/normal_5fd7fb2533ec4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378160/normal_605f33939edb8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457570/normal_5fe1bb5e000ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448115/normal_6056b63df1388.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422912/normal_5fd05ee8237a0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393785/normal_60381dbaa82fe.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447270/normal_5fed64057f799.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407733/normal_60443d59b1c4b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366305/normal_600ea2b1689ad.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403260/normal_600573a12b98e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416653/normal_5fefdd0040527.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470981/normal_6046076ea8a7e.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/e1f0debc-e3dd-4a8d-92ac-df13679e711b/17151032939.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/26bd446e-b44b-4f54-941e-c6118eb0ad86/viwukazut.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9d105f32-af6a-49ab-a782-330f6a53c8d5/19429054178.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f002.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF002	5376 bytes
SHA-256: `cf5117881ecfe81381e29f17ada9d044ff7eb341d3d03342b6e236d522a690bc`
`font_01_sfnt_off0001021d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1021D	1800 bytes
SHA-256: `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`
`font_02_sfnt_off00010aaa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10AAA	12444 bytes
SHA-256: `2fc26e4ee3d7e4da6d30e02752d916f6914bad4bd328ce61ee4a19e5661b8a8b`

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