Malicious PDF — malware analysis report

Static analysis result for SHA-256 329f12d3a41c0509…

MALICIOUS

PDF

65.8 KB Created: 2020-11-21 06:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4acc1ec589998581180bfcb2560da964 SHA-1: d5beb38ee22f60cb4573dfa2bd2bab005c0aeeaa SHA-256: 329f12d3a41c0509d5cc59e6f96d1abc136e905714cb7aa8016110179d3dc185
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://traffnew.ru/123?utm_term=layered+architecture+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450417/normal_5fa854e0a296c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f8e2eac70ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473645/normal_5fa62a87389dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5f96fa0b4230c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380393/normal_5f8b420621268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f9e364ad9528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f9154262e0b6.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/kiguteperilodu/indirect_variation_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/ifttt_gmail_to_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/psychomotor_domain_of_bloom_s_taxonomy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7dc6b4-0ff6-45a2-9f8f-25ea80b150f6/crop_o_dile_snaps.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/features_of_functions_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/numbers_1-_100_english_worksheet.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_off0000c6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A9 5188 bytes
SHA-256: 4c79560130d736a71aca20aafa02389b8d2ced0be6303cbe6b97795f773a4bcd
font_01_sfnt_off0000d832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD832 10124 bytes
SHA-256: e5d26712473fa02dbaadd1e24230a77e15ee3b4b24e91020929a7daeef06d0be