Malicious PDF — malware analysis report

Static analysis result for SHA-256 22399537eea99f69…

MALICIOUS

PDF

72.0 KB Created: 2020-11-23 17:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ee9567cb068544595e4cffaab025b085 SHA-1: 6027e7bf328959d4584455a8ce311ce7519f8ddd SHA-256: 22399537eea99f6999bd04a772cae5d6c46caaa1d8accd2145f05592dccfc794
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://traffnew.ru/strik?utm_term=giancoli+physics+for+scientists+and+engineers+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443588/normal_5fade15c54c6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5f9bd423a7dce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/65424183-ad38-43df-b5a1-ec34fa7cff6b/64270847409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb001544-b470-498d-97c2-d43c2b02197a/sulaveweribiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12f41448-ca0c-4afd-bdda-749c624ee99e/61438672227.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/rexezu.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/bumblebee_123movies_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f2c07a-e696-4aba-b64f-30a114200834/size_of_google_form_header.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dc370b8-7a5f-4744-a5ab-68e6f99536dd/76701450627.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/conditionals_exercises_upper_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/tefitawopetod.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/hydro_power_plant_visit_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8c46a51-c9c5-4a01-9270-c96363b60e42/st_stanislaus_church_modesto_california.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_off0000dbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDD 5644 bytes
SHA-256: c3c3dee0c0cdcafa0efe840740c9b9fe67428becc6b291fd3a2b3ce498cf4d6b
font_01_sfnt_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 10604 bytes
SHA-256: 4a3175f4e6e6d21ee2f38e9cff8cab37850581dae52eca846e66fa355015c1c3