Malicious PDF — malware analysis report

Static analysis result for SHA-256 c399d5462f75d422…

MALICIOUS

PDF

73.5 KB Created: 2021-03-30 13:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: d7a883eb3cd94a76b30b6a6fa6ddf1fb SHA-1: 5752979858e9ccba9cdb2170a9a1b6f097fe2656 SHA-256: c399d5462f75d4228d28135af6528e032237c38a62dfcc296732c682b17613bf
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading malware. ClamAV detection and ML classification strongly indicate malicious intent, consistent with a phishing lure for a free resource. No scripts were extracted, but the presence of an external URI suggests a download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nipisod.ru/award?keyword=descargar+diccionario+biblico+mundo+hispano+gratis+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413567/normal_603ab66bb953b.pdfIn PDF document text
    • http://tubezadobuzaro.66ghz.com/free_business_card_mockup_psd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501045/normal_5fd2e7f2af69d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fdaab1f27044.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/b1c27289-fa9a-42a1-a323-6b497bc311a8/what_are_the_benefits_of_keeping_pets_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/vaxivuvosaripapepubu.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/shilpa_shimle_waliye_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/pegetuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/lipirumonazazidizi.pdfIn PDF document text
    • http://regojefef.epizy.com/6777628648.pdfIn PDF document text
    • http://kosener.epizy.com/androidx_viewpager_dependency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea0ce437-2f62-4f50-9f97-4b4d6a5ce554/35397265141.pdfIn PDF document text
    • http://nodefojabotozij.rf.gd/what_makes_a_good_student_paragraph.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/how_to_search_on_quizlet_on_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/wamadolefubekukajupowiku.pdfIn PDF document text
    • http://wupumod.rf.gd/vivah_2006_full_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/pie_calcaneo_valgo.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_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 5708 bytes
SHA-256: 1d0313934779b52ed6c4f0e55885894f1d307b7513c3f6c72d68c91d0106c65d
font_01_sfnt_off0000f2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 10592 bytes
SHA-256: 8d7adc318e86a576bc13590e228aafaeb83ddd7b04f7603c9466c369dea00922

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