Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7d167d5e5c6ff2…

MALICIOUS

PDF

76.1 KB Created: 2021-02-24 20:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e4963b352e6c830c2649a6c5280c6735 SHA-1: b3a0317356b8efdf49d20f8bdcdd50b7367ea625 SHA-256: 0b7d167d5e5c6ff2ccf36f4045cfc3e13d79ab975953a6947921263fde2d4727
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://druttle.ru/123?utm_term=brandsmart+jobs+near+me PDF link annotation
    • http://zakovekapi.22web.org/university_of_agriculture_abeokuta_post_utme_form.pdfIn PDF document text
    • http://fevozogu.iblogger.org/72040733271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_6011bd82bdf87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451019/normal_6003df6eebb94.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/2ghhfnx/does_blockchain_wallet_address_change.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_602ab4bf29fa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_60362415b6e48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470982/normal_602bdd8f20b1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393908/normal_5fcb98ba4cb16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448719/normal_6029432bb3eee.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/memexelu/simple_timeline_of_us_history.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/36221962308.pdfIn PDF document text
    • http://pavemamixazose.rf.gd/96011492917.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/modern_slavery_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/amazon_cloudfront_developer_guide.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_off0000ebe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE2 5204 bytes
SHA-256: b23c13b243d316f4aaf196855e6834502c344bf64df33f57988fbec113b502aa
font_01_sfnt_off0000fd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7C 11180 bytes
SHA-256: 3ec4e92cd65051b269ad9693d720336aa7519214347a06a3fe2485e67c526e0e