Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e85d72f66fff39…

MALICIOUS

PDF

77.2 KB Created: 2021-03-31 02:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2456a3837980a5d514c390343d706620 SHA-1: bed901f41eb6a7f9268a286373ea355f37ae5926 SHA-256: a8e85d72f66fff39432a2babc512a763c403cb67bbf1967da6b86a407a0cafa3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, strongly suggesting a phishing attempt. The ML classifier and ClamAV detection confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=information+richness+of+communication+channels PDF link annotation
    • https://cdn.sqhk.co/letaziseb/YMLicjg/my_airtel_app_free_data.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/Jo0Gzgi/car_art_wallpapers_hd_for_desktop.pdfIn PDF document text
    • https://cdn.sqhk.co/juzilolawu/eXijidz/17224472021.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/cj2ssib/find_it_indirect_characterization_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/4GZidid/83618406239.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/9aa5d3b5-17a6-42fc-8162-9f5f76f725dd/68460697735.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/9761830352.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/zodezomi.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/deepwater_horizon_oil_platform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f81df0-d997-445d-b5a0-19cf77ec985f/ferrari_f40_engine_bay.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/imputed_righteousness_catholic_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fdfe819-2c80-46e4-a1bb-7373a18cf0ec/93848428140.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/5483025529.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/gasobinix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5637e2ae-a0a8-4803-a0f1-f57faf573f7c/74454263308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac61bbe9-7d1e-44ad-b48c-91a0b155f9ee/34432093489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e307480f-2915-4b77-9d4a-89c0c458c480/what_kind_of_game_can_i_play_with_my_boyfriend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb70d02-ccd8-41a1-b5f8-b1531b2be359/vishnu_sahasranama_stotram_in_telugu_audio_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b627df-f1a3-474f-8523-d774450aa781/para_que_sirve_el_jengibre_limon_y_miel.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/86834667200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b767bfe5-729b-43bb-a78f-e0c0503b0085/pedobanewadavositiguni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b9b0ac-0915-432d-9c71-47653a15554a/nessun_dorma_aria_translation.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_off0000ee39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE39 5060 bytes
SHA-256: 0d99bc147a38f18ec9f9b868fe6f486498f08934f179f6e72b5335add5cb40a9
font_01_sfnt_off0000ff40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF40 11352 bytes
SHA-256: 0a28d04c5c075200e4758cbb75d13f4cc3137457699f10a6ab3f53b635e3bc15

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