Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db23435a7946400…

MALICIOUS

PDF

66.6 KB Created: 2020-11-13 08:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7d55556667d1913a71106fdea61e348c SHA-1: 124b80abbc2fbac0f540538579655c095f78d271 SHA-256: 3db23435a79464009b691f75206aa32eefb9013c48f77a919ab160d7954ded74
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-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://traffset.ru/strik?utm_term=star+fox+adventures+rom PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405950/normal_5fa2a616c9746.pdfIn PDF document text
    • https://labegemi.weebly.com/uploads/1/3/4/7/134709462/7109300.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/b3120e47405f15.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/8897153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444123/normal_5fa80da57204d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5f91b9a20b6b4.pdfIn PDF document text
    • https://sakolepak.weebly.com/uploads/1/3/4/5/134588428/xokezasabumofewasoz.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/zidenigad/tirixizuzafakusojaguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/694b3833-ab5a-493e-b982-f4fa1811d647/universal_soldier_gameboy.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/temple_college_library_database.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/clash_of_clans_private_server_dns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03e2631f-1c1f-40e9-b4d5-437e39bb4cfc/29030778490.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.

FilenameKindSourceSize
font_00_sfnt_off0000c638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC638 5252 bytes
SHA-256: 64307ffe61108e825c2c54f1fde7bfb2d1f4f345021fbd095fcb57627953978c
font_01_sfnt_off0000d80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80C 11672 bytes
SHA-256: 181744e55a2bccb97501e5dcbc6487fc257ef494a8f9a1e9ee36f174366a294c