Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adf983622c0f6f6…

MALICIOUS

PDF

66.3 KB Created: 2020-12-19 10:26:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5b3b9181e591af0c367eafb936a50ea9 SHA-1: d2eb8c8dec0957c5eaa7f7f0cdf01d1bba9c3208 SHA-256: 8adf983622c0f6f65197301ce73d70451b94e3802fe1d47f026c61cd9f3dfae5
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/strik?utm_term=miami+valley+ctc+for+adults PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447630/normal_5fa4e6e572dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_5f92a7b1d229b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5fa251706868c.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/2afdd620-9a9e-411a-a2c9-9712e3ef2d82/901031853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13b97cf9-45b2-4fa8-9184-79977e2dad30/27676184612.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/17859549483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04f1281f-0358-44fe-8e10-0def3ef552e5/nancy_scheper-hughes_husband.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc597938139af0376650267/t/5fc985652f5dbb44b771f2f2/1607042405253/daxubal.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/dozamupet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acece3f6-9879-4a61-bef1-ed48c59dfe72/benodowozisaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdfafd88-872f-4c8c-bfc7-adc4c2c6e51c/70930239399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85b9758-7772-4e81-9b97-7c1202c12cc1/13225284841.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/86014618313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/693df21d-d1d3-44af-8eef-9f4aefa495b2/sistemas_operativos_deitel.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_off0000c774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC774 5336 bytes
SHA-256: a7d223f4dfd40b85a2cdcc7a3eeaee52f02cbe1ce8dabd77ddfb1d97e8ed49cb
font_01_sfnt_off0000d9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A1 10320 bytes
SHA-256: 450d6c5e5b06bca686de7df90a3fbc2b0bcd86c28fba77c465a52f9d798bb0be