PDF malware analysis — malicious · 23dad5147be2debe

MALICIOUS

PDF

77.4 KB Created: 2020-11-18 10:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 73f81c57f85994a5f2c0308e46c6ab62 SHA-1: 23bb488cebc2bfbf8b05c41d68ce11c7d0a893b4 SHA-256: 23dad5147be2debeaa07b08940db072eb7dc13acc10f453a60421167d667f96d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/strik?utm_term=conclusion+de+la+practica+docente PDF link annotation
- https://cdn-cms.f-static.net/uploads/4372360/normal_5f89b4aca9692.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393900/normal_5f908dc43b226.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384037/normal_5f932b5677ab2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480414/normal_5fb36f7b7eced.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416144/normal_5f9dc76316ecc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500910/normal_5fad410279c8a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368969/normal_5f8b231cc96b7.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/d309ba8d-f91f-44c7-96a9-691bd4edc0c3/98256078831.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7cfa2369-82c1-4f31-a219-e0b538875b0a/boundaryless_organizational_structure.pdfIn PDF document text
- https://s3.amazonaws.com/xajowu/sofatarogiwules.pdfIn PDF document text
- https://s3.amazonaws.com/dejazuvorira/resident_evil_7_bosses_guide.pdfIn PDF document text
- https://s3.amazonaws.com/daselex/44807073090.pdfIn PDF document text
- https://s3.amazonaws.com/somamere/bejusojumo.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_off0000f38d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF38D	4972 bytes
SHA-256: `d4826f368a5bedfa9c16ed0069ae5d78d7878eb6fc2d29f23d5584f3f1250a3c`
`font_01_sfnt_off0001047e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1047E	10808 bytes
SHA-256: `9cc95e3d5bf99ced09c0e172b457a5f7323525ca1fa4281f42fd16ccfb6cba19`

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