Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bdbe0cd8b2d2ff4…

MALICIOUS

PDF

66.7 KB Created: 2020-11-30 20:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c257d7affdcb14ffe0284ba3f97a9741 SHA-1: 103911e3d29ae0b245dee26e355ae767f1a74dae SHA-256: 8bdbe0cd8b2d2ff4acb86a83005eb02a926d9fdec08c18e309e4e250b90b2c32
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 0.9998

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://trafffi.ru/aws?utm_term=creative+powerpoint+templates+free++for+teachers PDF link annotation
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/lasitoxajazug.pdfIn PDF document text
    • https://pisilobeko.weebly.com/uploads/1/3/4/7/134728547/lokorigeb.pdfIn PDF document text
    • https://gogiwujuduk.weebly.com/uploads/1/3/4/3/134352159/2738117.pdfIn PDF document text
    • https://zazokovorif.weebly.com/uploads/1/3/4/3/134321981/55443.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/garorowa/10481854623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034fd6cf-de21-4c78-a32b-26d9b18b1a4e/el_absolutismo_en_europa.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/perfect_attendance_award_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/163c5565-60d8-44a1-9d8c-cffe557110aa/touhou_remilia_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/kizuporowefib/fowazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9339f2db-3421-48aa-91a4-cd19b35ee60e/77070669352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02a7aad-4b00-49d6-88ee-3d4b10cd8143/to_kill_a_mockingbird_chapter_summary_25-27.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/buffalo_linkstation_firmware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c802134a-69b2-42de-9265-f5bab1a91df4/vivapejugozezedudozuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df5b109-fef0-4c09-8392-501123ac3c99/peter_kelly_cpa.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_off0000ca74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA74 5312 bytes
SHA-256: 93fcaca7a90de0a258b439d8d119615c99a1192b82985cc3ba0e3f67d806f96c
font_01_sfnt_off0000dc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6C 9804 bytes
SHA-256: 859330d193650eaa3fdaa5fb71985ff71f5ec3a696119ea2dee2ddfa3708b0a1