Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6028ad55ec05a6…

MALICIOUS

PDF

71.2 KB Created: 2021-02-24 05:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 979252f11903bca86bde720e0ba3bed5 SHA-1: dfa10a0951dcc60a3934e1e22f7900fd4b0457bb SHA-256: 4c6028ad55ec05a6c138ac7e4fa498c00b1042e262c4ea01792f41cfe8c696c8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://baarspo.ru/wix?keyword=yugioh+tristan+voice+change PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416331/normal_5fc756d3d7f5c.pdfIn PDF document text
    • http://novuvomedo.iblogger.org/vononebexidobo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449602/normal_60018f6d73afb.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/pisik/export_html_to_react.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/beats_bluetooth_earphones_manual.pdfIn PDF document text
    • http://fabonek.rf.gd/how_much_metformin_causes_weight_loss.pdfIn PDF document text
    • http://bewaxupu.rf.gd/vatagewexatutexowapaboli.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/setuxiborurukobavawerog.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/jitirolejulegujubexigulen.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/69985569657.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/alaska_map_template.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_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 5048 bytes
SHA-256: 53c81d2d877a252c118d60225a8e71e75917564d918c33127730b00b64792a1a
font_01_sfnt_off0000ed2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2B 10300 bytes
SHA-256: 9e4dd38733925d2158745fd93b1d6b0867839d39092eddc75f969004777a7adb

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