Malicious PDF — malware analysis report

Static analysis result for SHA-256 d454b2b61b53f5bf…

MALICIOUS

PDF

85.4 KB Created: 2021-01-31 22:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0aeb8def10824700ac6d2ba15ab7d78d SHA-1: 10709291727ce23963604feedcb19f4e249bddef SHA-256: d454b2b61b53f5bf44614ab7bb292dc1179587095fd52a027f528d711c6c6374
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate a likely attempt to redirect the user to a malicious site.

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://jottigo.ru/123?utm_term=derrida+speech+and+phenomena+pdf PDF link annotation
    • http://punevufazeji.iblogger.org/bo3_zombies_kino_der_toten_guide.pdfIn PDF document text
    • http://bezprovodov.guru/44847463144rfigu.pdfIn PDF document text
    • http://de-bewertung-889562.icu/avengers_endgame_cammb7du.pdfIn PDF document text
    • http://podcard2020.site/esquema_enseanzas_lomcel6c65.pdfIn PDF document text
    • http://jnatural.space/63017210113npanl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://takerowul.epizy.com/ayenge_yaad_tumhe_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/bursary_application_form_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/78560575850.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/53663358909.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/ragnarok_eternal_love_guide_job.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/byron_bay_gig_guide_tonight.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/format_sql_server_date_dd_mm_yyyy.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/40755039972.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/35672191902.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/census_report_of_india_1941.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/pufamiboso.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/xomason.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/zexutuzalurusovo.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/11103189681.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/mabararag.pdfIn PDF document text
    • http://tumewadeb.epizy.com/61392686169.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10707 5360 bytes
SHA-256: a16c3c7ee69a91c710f005c6c6a685d54aa03d816db3b909a1e56bc3fbdfd651
font_01_sfnt_off00011917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11917 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00012479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12479 10416 bytes
SHA-256: de4f39caa09981d7e2836c7fb240309705fe831e5d10862677b71bca0cb2c6a6

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