PDF malware analysis — malicious · b31d5d0ed5e59091

MALICIOUS

PDF

71.0 KB Created: 2021-01-03 07:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 227c004dc3534e56212dc346d3e5d1d4 SHA-1: d3bb57c3aafb39abdd4400156b06de3d42f6ca68 SHA-256: b31d5d0ed5e5909122469274f896036f4300cc29ce802fb90bac3a2c5fcce123

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 suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious resource.

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://trafffi.ru/123?utm_term=minus+13+celsius+in+fahrenheit PDF link annotation
- https://cdn.sqhk.co/lozukoxokir/eZYidic/gun_strike_shoot_mod_apk_download_revdl.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447253/normal_5feb169fdc319.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458837/normal_5fd12f682c05a.pdfIn PDF document text
- https://wuzajamepoxomis.weebly.com/uploads/1/3/4/0/134096323/pizopamikavaxo_zuxumijifiwig_migigelusoxuku.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416806/normal_5f9a8c8b514c3.pdfIn PDF document text
- https://metiganad.weebly.com/uploads/1/3/4/6/134659194/2597180.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392664/normal_5faed5077e120.pdfIn PDF document text
- https://cdn.sqhk.co/majumoros/bPgchji/mapijevikuki.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/degisapemifa/fexipenebav.pdfIn PDF document text
- https://s3.amazonaws.com/rokuwapesu/autoimmune_hepatitis_appraisal_of_current_treatment_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/panokojol/marcy_mwm_988_cushion.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_off0000d6f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6F2	5188 bytes
SHA-256: `47e273fe83dcf6f825324d95e4637bb8471dc3ec2ae4dfe6abb5efe0260a4cc5`
`font_01_sfnt_off0000e8a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8A2	11232 bytes
SHA-256: `a0cab199756f01bd8a1e6f27c2b6b45aae0ac75d7842c64f66011bd2735cb1f5`

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