Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b23692c59f40fc3…

MALICIOUS

PDF

147.0 KB Created: 2021-03-04 22:09:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 37974118c53a3d96e36ba53ddfa964ab SHA-1: cebbb3854e7c0065a3d07ed79c01a75b10dc30b0 SHA-256: 6b23692c59f40fc3195b4e8c3d568287b4592228af11b4c4543a51cbdb78c2b3
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body content is heavily obfuscated and appears to be junk data, suggesting the primary malicious function is executed via embedded scripts or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://druttle.ru/strik?utm_term=what+are+two+characteristics+of+figures+in+ancient+egyptian+sculpture PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483623/normal_603ccac3a473c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486060/normal_5fd2f4ebe9e98.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/jesenokojutejowuzukecj582.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403422/normal_5fc8f92fbd545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_600d28a839b43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501810/normal_5fc8a49ee1d42.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/fghEbjb/t_mobile_deals_2_iphones.pdfIn PDF document text
    • https://cdn.sqhk.co/dejenuluzew/hchgggM/climbing_plants_for_fences_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/ididjWa/learn_android_app_development_online_free.pdfIn PDF document text
    • http://tvoyoproc.fun/exercicios_termometriay08uu.pdfIn PDF document text
    • http://cabinetsapp.xyz/destiny_2_walkthrough_guidezmpiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454684/normal_5fd241df3a2b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_5fda3bbb58645.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381988/normal_6008425ac692d.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/d670Xjg/damukexopomor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413109/normal_60018d8b2a4f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485578/normal_603f18fc62aca.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/aggKjd7/gotoxinajigorilonu.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/2abff77e-685b-4800-b26e-1cd43c66bec6/tipo_de_licencia_del_sistema_operativo_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b577b3d2-bdc7-478c-82aa-dea367fe880c/the_upside_of_stress_citation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e79291b6-8c75-4091-a4d4-849aa7ffb3f8/13_signos_del_teatro_con_su_significado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dafdf4f-48db-42c4-a73e-c8c56f466e32/vocabulary_activities_for_grade_6.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_off00020398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20398 5484 bytes
SHA-256: ab8a8f1e972e5663e41fd2109e91b2205f6d022856168b4ba31f8c917e21d06e
font_01_sfnt_off00021662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21662 11740 bytes
SHA-256: fc524fba0313ef583979ea3cc8d81860443c72b36ff19cf2555ee74e32b41d57

Open this report in the interactive analyzer, or submit your own file for analysis.