PDF malware analysis — malicious · ece8fe1bdd00ff9f

MALICIOUS

PDF

70.6 KB Created: 2020-11-16 21:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 25eb0cbae805397aa4b252404d3f8870 SHA-1: 8ed0f465cc00f2fa013dcc3b13e8bb4d853cdab9 SHA-256: ece8fe1bdd00ff9f5baa9d4c51af47a3f477fd8f5971c7c37b262657de003028

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a phishing site disguised as a study guide answer key. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious domain, likely for credential harvesting or further malware delivery.

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://trafficel.ru/strik?utm_term=southeast+region+study+guide+answer+key PDF link annotation
- https://cdn-cms.f-static.net/uploads/4476288/normal_5fa8d4365507e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370555/normal_5f89f2894ca94.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408596/normal_5fad435c8534d.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/tokit/union_budget_2019-_20_bankersadda.pdfIn PDF document text
- https://s3.amazonaws.com/sowewazulejewi/fm_whatsapp_download_apk_pure.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65b91f4d-6963-4675-a64d-2df34645d8ad/33444041364.pdfIn PDF document text
- https://s3.amazonaws.com/lopazura/method_overloading_java_questions.pdfIn PDF document text
- https://s3.amazonaws.com/tuxenipup/441388982.pdfIn PDF document text
- https://s3.amazonaws.com/wexukufedepim/jisanugokudamug.pdfIn PDF document text
- https://s3.amazonaws.com/remeranexe/as_per_our_conversation_on_the_phone_today.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c0bac2dd-d7f7-4c74-b39a-7f76c9ae5bcc/56699513692.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_off0000d732.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD732	5416 bytes
SHA-256: `27e239b985f69e40f1c76ba5762e254361b27dafe38c22a02a4f45ce2953873e`
`font_01_sfnt_off0000e9a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9A8	10436 bytes
SHA-256: `dd9f3b573d8ff8dd2c769a267a173f7b31b1361e088a33d91a6b8e0a06598541`

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