Malicious PDF — malware analysis report

Static analysis result for SHA-256 812dc9077dddb133…

MALICIOUS

PDF

79.8 KB Created: 2021-05-20 22:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9b339c1ba523f33b1217bb991849eaed SHA-1: 23968f5f8addf512d6248f4a898cca212abb653b SHA-256: 812dc9077dddb1337d59c689ee2ff1ff7d9a36d21a871fcab0adfc0c3ca3c71d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The presence of multiple embedded URLs further supports the phishing or credential harvesting nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=how+to+make+a+frozen+strawberry+daiquiri+uk PDF link annotation
    • https://modizotu.weebly.com/uploads/1/3/2/7/132740501/907de4f1bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444885/normal_5fd623dd1e30b.pdfIn PDF document text
    • https://pogedefulelot.weebly.com/uploads/1/3/4/6/134628496/7455313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_603b28284bdab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_6056cadacaf9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_6056d108f2196.pdfIn PDF document text
    • https://gefawopunov.weebly.com/uploads/1/3/0/9/130969454/vukejagibixut-mixib-gujuviwawumot.pdfIn PDF document text
    • https://jutegejedexugak.weebly.com/uploads/1/3/5/3/135384922/rabap_babipoxafer_fogerixabimi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5fcdb2164af55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_600c777166da5.pdfIn PDF document text
    • https://munowimil.weebly.com/uploads/1/3/1/4/131406650/tofok.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/jeworurowam/30176484383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c5dad0d-0918-4128-a688-43c4a553c6cb/treasure_island_book_summary_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6abc364-beea-49ce-a825-b15934a87ee0/raxosesesuzovuledimidetep.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/clock_wizard_timesheet_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/browsec_extension_for_opera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b875c0-e7a8-4b15-90d2-18f215a36389/marie_kondo_method_clothes_books.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/how_to_get_playstation_3_controller_to_work_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/listening_ielts_score_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/49276950866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09bc3815-4ecd-408e-9d54-6270af7e4762/sniper_ultimate_kill_2017_full_movie_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83cbdb2d-bfc5-480b-acad-94a047e08408/resumen_del_manifiesto_del_partido_comunista_marx.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/placement_report_2019_isb.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_off0000fa55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA55 5556 bytes
SHA-256: 07121db0785de2631b28667aaf1a359c6ec7007d9cfb3dc65bbac99012a3f7ab
font_01_sfnt_off00010d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3F 10456 bytes
SHA-256: 303a740f54e348fd69a358f61ec67901b94501a05a275f76cfcf17c30044b050

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