PDF malware analysis — malicious · f13be814778ea38b

MALICIOUS

PDF

68.1 KB Created: 2020-11-10 21:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: bccdb7920bc18d1e0bfd021a0a8a0f2e SHA-1: 23c0dc8f93a6cdce3870d7a6d8ade0d311aab4a1 SHA-256: f13be814778ea38bee5917a07327a9bf11546abc0302483aa82c5908527aedd9

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://traffnew.ru/123?keyword=armorsmith+guide+swgemu PDF link annotation
- https://cdn-cms.f-static.net/uploads/4387817/normal_5f9a7c313df87.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460446/normal_5fa609aa6065b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371523/normal_5f9c64e3c80b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408346/normal_5f99af30d6d21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369928/normal_5f894e2616ee2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379844/normal_5f8c4ebd5ae63.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375896/normal_5f8cad29c2c43.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373776/normal_5f88f4193bb10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384035/normal_5faa4135838e1.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/6096f751-d951-414d-8fa6-713d3d04d35e/pabug.pdfIn PDF document text
- https://s3.amazonaws.com/wenobagupexekap/7743280407.pdfIn PDF document text
- https://s3.amazonaws.com/robumuduluwise/71473183995.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95ef638c-266c-4d81-86b0-3f938f8ffc9e/sanejumi.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_off0000cdd1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDD1	5076 bytes
SHA-256: `c3a1ce99f6fb11ab2a98799b2eadef13dbdcf2585234623b6f3a35a163b3ead0`
`font_01_sfnt_off0000def9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEF9	10732 bytes
SHA-256: `9cda9c8692138710116cdba5a75ba8bdb05e25d396d54aa33582d329726e47c6`

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