Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddd52a83270f4d3…

MALICIOUS

PDF

83.5 KB Created: 2020-11-26 22:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bf29aecdca70e72020784042812f33c8 SHA-1: 1f17a0204f76d65f9a1a7fe6676d54e60ed022d6 SHA-256: cddd52a83270f4d32bed4b37385accb5fba9d1be9f3b8061800fd9467f0248cb
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 0.9995

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://traffking.ru/strik?utm_term=operational+risk+categories+definition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424933/normal_5f9f1e746382c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/739cdf40-2a7f-4a02-a760-86aae6a25052/18151919475.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/89023986361.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/gosiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/ss_perforated_sheet_manufacturers_in_pune.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/glade_plugins_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53c62bf5-cb68-4698-bce7-7af1a8a01749/fetemebofewizogado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/271f339d-d8b8-46ba-9a1a-953a1d819d5a/44509861063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44c5c24-146f-41a5-9078-5351c955c4be/79880400803.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/2018_monthly_calendar_template_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/adb_sideload_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/37327376319.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE520 5204 bytes
SHA-256: 04b6b1888e9506563406201459073c0b125ebe31c89e4da86d5a5053c85a4f89
font_01_sfnt_off0000f6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D7 11500 bytes
SHA-256: 94eecbd2281f6e1654843ca002bddf7c0e08afa13d84088da0cc4d49875918b8
font_02_sfnt_off00011e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1E 16036 bytes
SHA-256: bc1c1644e30597ae0beaac312b9749a82b64e26c109397326cdc67fdbaf2fe17
font_03_sfnt_off00013285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13285 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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