Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fcf20543045b6e…

MALICIOUS

PDF

74.4 KB Created: 2020-12-26 20:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1efbb32e99652b365e078edb4f13da59 SHA-1: ea32c92a66d443d63b370a40def76a1d3e417e02 SHA-256: f9fcf20543045b6e2400e383648a0cd2af47df84107ebc55c07d4a436989b377
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://trafftec.ru/strik?utm_term=true+fear+forsaken+souls+part+2+extra+episode PDF link annotation
    • https://cdn.sqhk.co/milevatomog/hf9BbTX/hoplite_sword_ac_odyssey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491705/normal_5fb8eb854b325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5f95e2b7deb0e.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/Gagd5ic/sky_whale_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fipexuwebo/moiggjh/nafus.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/RWnIulG/lost_sea_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426690/normal_5fac2fdc8f478.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/9ba8da1b-37d4-4c5b-b295-d17b7f2d23a7/fobenikuvenunikane.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/vubapununevumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f469fdd-027d-44bf-a781-27e580d0901d/fomovekimajusonabalur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31fdd358-009b-40f7-8049-d9c72bbe3c51/34930645426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72a14a8-0136-4177-87d9-7bc3ee7eecfc/38851670612.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 5248 bytes
SHA-256: bd1e29009cb857e29c1abb47fe5b4d7cd56b44dd6319ccff96129e2170ed0824
font_01_sfnt_off0000ea19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA19 4696 bytes
SHA-256: 190ed3ca2f366942097257119aba5b5d93bc68e5c3ec07997be340eb95d35fcf
font_02_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 10936 bytes
SHA-256: 09e87b18e4db30ecf34752953e27bd3b502d8ba163a437dc9f998f776a66db74