Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ed614a06d59f8a…

MALICIOUS

PDF

78.3 KB Created: 2021-03-12 07:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b3d2a98a13477c6534d3a8a8283dfde SHA-1: 4d2b9437c51be2bbf84c2ff9f9c185ead00e2747 SHA-256: 52ed614a06d59f8a3c98e23bcf3e09d8fdfd65406cab0e08907c684fa481a3d1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading malware. The document body, though heavily obfuscated, contains text related to 'Addictive drums standalone', suggesting a lure for software piracy or a fake download.

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://jumiwimov.ru/123?utm_term=addictive+drums+standalone
    • http://kovemiwixipogaf.66ghz.com/basic_redox_reaction_practice_problems_with_answers.pdf
    • http://lamisorosasam.mywebcommunity.org/69173803201.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://merovuditipin.onlinewebshop.net/2035469031.pdf
    • https://s3.amazonaws.com/regovadeje/84522415379.pdf
    • https://uploads.strikinglycdn.com/files/e96a8891-206f-4d62-80c3-f27de1adb1a4/81847592732.pdf
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_9cadb1dba73d4bdf903641fe0302cf4c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/341a2460-ae45-401c-9f35-a438c49dc025/83181965331.pdf
    • https://s3.amazonaws.com/lorifawuvawot/new_michelin_guide_dc.pdf
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_36937c95b70c40288dfdd2846403382d.pdf?index=true
    • http://kiwusegofavuto.rf.gd/bufadusixamegixebi.pdf
    • https://s3.amazonaws.com/jirebonudur/vce_to_converter_app.pdf
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_cebaf99a80ce42c78c571bd0fc37416d.pdf?index=true
    • http://pikubub.onlinewebshop.net/aircraft_maintenance_technician_jobs_canada.pdf
    • https://uploads.strikinglycdn.com/files/2966b58b-b5de-41c0-a8ab-337ad9d0a234/26086211394.pdf
    • https://16012499-1299-48b0-8cdd-5f23a7749958.filesusr.com/ugd/fafc38_6f033c82b190473a99cd8cd053e97ff1.pdf?index=true
    • http://fufudaloxola.onlinewebshop.net/how_to_turn_off_camp_on_nec_phone.pdf
    • http://pekomuvave.myartsonline.com/72527342213.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ce.bin
4fc27d11f1540e112e431c9b05e337936e1131d1108c1ae516e608ea9fdb97c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CE 5136 bytes
font_01_sfnt_off0001082f.bin
13cb88725f33f6010c385042d5bb8be732e0707979f3cb4812dc72c038e296ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x1082F 10680 bytes