PDF malware analysis — malicious · 435215f5f330fbb2

MALICIOUS

PDF

163.0 KB Created: 2020-12-19 02:54:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: cfa05d8c050f9087387004c505e19c84 SHA-1: 8af74920bd93e53f338dc8868d50aa98fdfe57ef SHA-256: 435215f5f330fbb28a6b8120d2c8d00f2b23c114ee12f04ab3fba65f7cd6b9e0

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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains terms related to job searches, a common lure for phishing attacks.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=salinas+city+elementary+school+district+jobs PDF link annotation
- https://cdn-cms.f-static.net/uploads/4375077/normal_5f8a8c972af3e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383300/normal_5f9f6953ef0f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414353/normal_5fb849bd53cba.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483336/normal_5fbc72b2d9266.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/nefomojuwet/iperms_batch_cover_sheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a855f705-b332-4ff2-a198-b3f8901f29ae/31390501994.pdfIn PDF document text
- https://s3.amazonaws.com/kasuwevovog/kagirenixulugobatebum.pdfIn PDF document text
- https://s3.amazonaws.com/nigimul/the_ausarian_resurrection.pdfIn PDF document text
- https://s3.amazonaws.com/vuzufexarevima/pokemon_game_android_rom.pdfIn PDF document text
- https://s3.amazonaws.com/zatazewoz/android_studio_check_kotlin_version.pdfIn PDF document text
- https://s3.amazonaws.com/naramuro/wauconda_school_district_118.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_off00024697.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x24697	5600 bytes
SHA-256: `61cf49ea6e4287b166e0ced0e885f82ca5e64236aba37133cb677474b82bb48b`
`font_01_sfnt_off00025977.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x25977	11392 bytes
SHA-256: `9ea1f0afa5653f1fb461986c229ba620dfb54adb927c8605c4f65fae4be152c7`

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