Malicious PDF — malware analysis report

Static analysis result for SHA-256 453c6e975265a836…

MALICIOUS

PDF

68.2 KB Created: 2021-05-24 13:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0a90642c6af048748f9357681c2f3991 SHA-1: 1c1cf45dd58c1c652329bfc109a51a18279cb7e6 SHA-256: 453c6e975265a836934e74c537c6fc1e11077bd4c9fa4408e92945fa3c52ac96
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://seumenha.ru/strik?utm_term=what+does+reconditioning+mean+on+a+battery+charger PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5ff54ab5038b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5ffb17ff8222f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_6028f0222c2a5.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/bomifabipi/how_to_backup_android_photos_to_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/f_table_0.05_alpha.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/13559258559.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/former_and_latter_rain_together.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/beat_sheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/why_does_my_samsung_tablet_keep_turning_itself_on_and_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b42c8be0-31f5-479a-84ef-1550adae7cfc/66593230263.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/falakogegivugu.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/34536640890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a49ad43a-a551-4c2e-939c-bc7936f54920/mechanics_of_materials_6th_edition_solutions_chapter_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51c0f1f-7ce8-4730-8aeb-7a41a8ae36a2/what_mental_disorder_do_serial_killers_have.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/mercadolibre_telefonos_android_usados_baratos.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/hayward_aquanaut_250_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/zigasosixafipemefe.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/journalist_s_guide_to_aircraft_identification.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/18740299889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f6a2938-46f5-4155-a8f0-432105374358/big_fish_movie_poster_critique.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/aeroplane_punjabi_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7265e9-b282-486b-ae15-c8c3b91f14bb/formulario_geometria_analitica_nel_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/rufogenexeb.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_off0000ce6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6B 5576 bytes
SHA-256: 9daac369c2ce34ae23b74d7e5f24c426342a2ca9c948ce0978c6372bd2dfd902
font_01_sfnt_off0000e142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE142 9800 bytes
SHA-256: ad98d146df4b1d5bc0e722a6f5a920c0b37956b867cc9f3775d49da9246e881b