Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ccff5d05ec94c7d…

MALICIOUS

PDF

98.4 KB Created: 2021-04-07 15:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a7310583cae8c569024960526d81d735 SHA-1: ed228f7f5debfdb707f4c82c724ec65b0c563cc2 SHA-256: 7ccff5d05ec94c7de3a87f7eb9ed930161e3fecbedeab50006b29e111c47ca94
96 Risk Score

Malware Insights

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

The PDF contains an external URI that mimics a search result for a popular book, likely to trick users into downloading a malicious file. ClamAV detected this file as Pdf.Phishing.Trojan, and a machine learning model also flagged it as malicious. The presence of an external URI suggests an attempt to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=percy+jackson+titan%2527s+curse+full+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485322/normal_601c69d8ee4d7.pdfIn PDF document text
    • http://xakubogika.22web.org/66843639532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419441/normal_602fd29fd4747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445333/normal_604b11496e4e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fc7cc10a486d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394068/normal_600e3529e4e2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404502/normal_60642d8994086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454426/normal_605ee8bbd9b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_6050e496515b4.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
    • http://botozagelexi.rf.gd/fidiwesejipomikakuv.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/roxevesasukalugere.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/commonlit_enemies_from_within_speech_answers.pdfIn PDF document text
    • http://diwomikutaz.epizy.com/87788747204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04f24776-b85f-4a79-9bb2-41c4acc54eb9/how_often_should_you_change_dsg_gearbox_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/voduv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3628f98-712f-4fe9-9639-e8d7e47abae4/mechanical_properties_of_rock_materials_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/science_lab_report_abstract_examples.pdfIn PDF document text
    • http://dubexejevobogi.rf.gd/xomip.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/63165487760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a6bbfc-b444-4d98-acb8-7a5050314967/70086040679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91639181-7940-4791-bd7a-baa418c8ca3b/funixowosugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b42231-f190-414c-bb86-86377c76ec56/zomomib.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/appendix_format_for_project_report.pdfIn PDF document text
    • http://gefureguk.epizy.com/how_to_make_a_vocabulary_notebook.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/activated_sludge_adalah.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001359a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359A 5448 bytes
SHA-256: 013c24e2ea8fcb635ebb3c7e875983a25eaedce93df5c3559d57b9edc852ce8c
font_01_sfnt_off00014837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14837 10844 bytes
SHA-256: 925a155a475a15344b45f2896ad54b4cfe21f7de8fb8c79d63d4f1f9a477f74f
font_02_sfnt_off00016d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D27 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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