Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b538202f19df6c…

MALICIOUS

PDF

71.3 KB Created: 2020-11-18 09:43:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ec1fd122db198d39cd8d2d12aa4ceec2 SHA-1: 285777cc8b2454963cb5bace1b15d390b8b9fa9e SHA-256: 30b538202f19df6c92e2b34c29b632194c54004f94c7344e0aa0044cb7a7630b
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://trafficel.ru/strik?utm_term=mr+krabs+walking+sound PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5f95425084ddb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f89af347b025.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/1419886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f89aa2a349fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8be9cfd1672.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/taruzudov/12017310040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fe7453-a764-4136-8242-74a1a35ef4c4/tamilrockers_2019_tamil_movies_free_isaimini._com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a2b127-1362-4813-9657-5979cf29ef40/nacho_lee_libro_inicial_de_lectura_p.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/property_appraiser_office_broward_county.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f435c122-0cd5-411f-b7bb-9337aacf8130/duburejiju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC478 5292 bytes
SHA-256: 56967aad6903a0283b190417fbfd1717f9dfba70f40d55552ff65a51acc1635f
font_01_sfnt_off0000d6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A4 10664 bytes
SHA-256: a3b96eefb53fa3037867d8ff24cf2df26aab2daa906c6556e1da9014a8dd8985
font_02_sfnt_off0000fb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB07 16332 bytes
SHA-256: 8e6f44f21a6cb6464db7b2705935d0eed1bbcefc8c2e8ed09117199423754ed5

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