PDF malware analysis — malicious · 9f8d0184cc383124

MALICIOUS

PDF

65.5 KB Created: 2020-11-26 01:57:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: c87a22797e9db7b2f7313e7cb70e785e SHA-1: 5c22b8bcca71d62a3669533bed0766fb2c2c1b6d SHA-256: 9f8d0184cc383124705798de82163d305d5f11f04f752168058f0f1faff3bb74

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI that directs users to a URL promising game mod resources, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into downloading a secondary payload.

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://trafffe.ru/123?utm_term=world+conqueror+3+mod+apk+unlimited+resources+and+medals PDF link annotation
- https://cdn-cms.f-static.net/uploads/4446270/normal_5f9e3f3831844.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393489/normal_5f955b250f3fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477173/normal_5fbee4e061a36.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412584/normal_5fb3890641dbd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414678/normal_5f9522db5590c.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/wapabefizosumi/agrochemicals_books.pdfIn PDF document text
- https://s3.amazonaws.com/fifomi/free_modern_powerpoint_templates_2018.pdfIn PDF document text
- https://s3.amazonaws.com/giwurode/syntaxerror_missing_before_statement_shell.pdfIn PDF document text
- https://s3.amazonaws.com/tadevewuju/low_sugar_food_shopping_list.pdfIn PDF document text
- https://s3.amazonaws.com/wulagisi/esl_activities_for_kindergarten.pdfIn PDF document text
- https://s3.amazonaws.com/ginutu/chemistry_acids_and_bases_test_answers.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_off0000c183.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC183	5584 bytes
SHA-256: `b55c45d289350b9a7c7349d268210fb1754736b16d5ab5a2c0490632d73d62ab`
`font_01_sfnt_off0000d472.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD472	10780 bytes
SHA-256: `85493e3287e7277a4d030f4f88ee1f0db244898247c2b8eb3ce4f2502ca57585`

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