Malicious PDF — malware analysis report

Static analysis result for SHA-256 4db33130d00ffbff…

MALICIOUS

PDF

67.6 KB Created: 2020-12-07 07:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 22ec0227e0e8cdcbe02002fef8db9e4e SHA-1: 2c9822a9b939acad7b89e1c80684d18d5e178342 SHA-256: 4db33130d00ffbff808c04ed4222ad3018858e6d9fe46a9abfd03a21e751b1ee
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://trafficel.ru/123?utm_term=nora+roberts+of+blood+and+bone+characters PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae8dfe6-bb49-4999-96f0-37d73ed87ae5/25169511350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e368d7a-f5e0-4280-8f33-d64278481179/povep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bf2f690-2c53-44ed-a789-6dfa6ff36c8d/papuvinalefosidosekapami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7971020f-e8fc-4de6-a04d-f6d30d487f9d/zukegozaliti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/666e5138-4f92-499c-a1e2-4643fb1f2175/economics_final_exam_answers_2015.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ba1840f1034a5cb4c0bb/t/5fc4b2f7bc819f1cf46d1723/1606726393900/minnesota_property_sales_records.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da2b0b2-28cf-4c85-9b63-50c1d5bb21fa/18976002136.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/singer_memo-matic_knitting_machine_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/kuzudevipelupefirivirigil.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/22432959291.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53b031c8c7413144e61dc/t/5fcb525fb6b7366152f6cdb4/1607160418223/davivexidolifisugosazolu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc009dd8787e87989674e7e/t/5fc5c8739b1ed03538a60912/1606797427641/fotedafafovedoradirego.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_off0000cbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAF 5216 bytes
SHA-256: 787bdaeb9043a3894ec46e815e8d64252eca00565121d7ba48d9db5de2f43593
font_01_sfnt_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 10604 bytes
SHA-256: 7eb73e7bbf64fb1b1b1a3150a0badde2d67d104846df2e71e7e9e74d2768b8ac