Malicious PDF — malware analysis report

Static analysis result for SHA-256 80509f3a32dc9492…

MALICIOUS

PDF

66.3 KB Created: 2020-11-20 05:25:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 78bb85a5140611c5a60ad8f486dc7456 SHA-1: d4dec8b40c3d88d669e21148a4e00213cd7135ef SHA-256: 80509f3a32dc9492585413d42fa9eccff636bd067345827b4d37de5bf6eb36d4
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=cedar+veterinary+clinic+moscow+idaho PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e29270-e39e-4a06-97d7-16b892e9ed92/block_emails_hotmail.com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f544e0ef-350a-4624-bc20-e0ac66fa7460/nsca_cscs_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e62794c-0caa-4aa4-8f04-60d159afc7ff/lalitha_sahasranamam_meaning_in_telugu_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db050006-7181-4b60-87e1-f8ff38f480df/xokibixibofutimufa.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/gulabanuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60349ecb-8d74-4f8b-977c-0919e3f01210/31498706080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f04a4c2-09c7-4a8e-95e9-af5f00486a7d/79501673054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8633c616-8010-4651-bb29-800b7543cf3d/valazilafiputorifuxor.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/resident_evil_6_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/botekek.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/advanced_rocketry_guidance_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/razugakegolumupunat.pdfIn PDF document text
    • https://s3.amazonaws.com/gebaxovudofe/57024054023.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/39234133011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f807846c-99d0-4b54-9df4-ef2f3d3c07e0/linikazuzunet.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_off0000c4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A3 5340 bytes
SHA-256: 040e64e36737b84ec5729ec343743159eb95f691a711e1a7c65fcc47e0203a0e
font_01_sfnt_off0000d6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B4 11220 bytes
SHA-256: cda4f302c9bcb7a324557596609ce73bc89a7d9d5c2133985b04df21c29802e4