Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e9efe6c74567d05…

MALICIOUS

PDF

73.4 KB Created: 2020-11-09 19:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5fe1cdd5dbd11501e625dd6fecbfcfa2 SHA-1: 90929241041f35840b2fb4db8e21a30fe3ee1776 SHA-256: 1e9efe6c74567d05b3a4b68ac23605b1d1bcdaeb771e9244cdf43b46016266d5
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 0.9997

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?keyword=halloween+is+on+october+31st PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f8e2e6c8337f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411701/normal_5fa236277c42c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_5f8ffc7c86352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_5f99cc5512582.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/sogovukanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_5fa40a703e34d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f887cf8a8386.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nimuwet/diary_format_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/foforizuzibufire.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/47175572495.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/39133964304.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/99161036432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71aa9ed3-6ab2-42e4-9f8d-28a0e8c71cbc/clash_of_clans_valkyrie_upgrade.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_off0000d46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 4988 bytes
SHA-256: 8cdcaee20506ec81729434711748d29e8a159613db06797786b88e80e0bebc1c
font_01_sfnt_off0000e57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57D 10948 bytes
SHA-256: 89d626cb192601bf3c92dc90d30cc7ca21f3c8c380e768027feb059343a8ff3f
font_02_sfnt_off00010a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361