Malicious PDF — malware analysis report

Static analysis result for SHA-256 01bb0284f0c7fcee…

MALICIOUS

PDF

81.2 KB Created: 2021-02-26 13:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 34acb42187e863326ed48b2621a53025 SHA-1: a76f315ae3e264972e925a7ba3f8a06512197224 SHA-256: 01bb0284f0c7fcee7904308a76991f9728b9ce67608b7d59b8f744222541b510
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that masquerades as a search result for a common query, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or trojan activity. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/aws?utm_term=what+kind+of+oil+for+generac+pressure+washer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371010/normal_5fff952b362f0.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/jaZNsaD/tulunudumenesunefuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/wazuzofi/jcfihdy/dragon_city_heroic_breeding_event.pdfIn PDF document text
    • https://tajerupabud.weebly.com/uploads/1/3/1/1/131164315/kusulakini_jusajowuroxi_lukugoni_ludirokefose.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389394/normal_602167571aec8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493597/normal_600132a29765e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5fd77d70326b7.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
    • http://likutolejit.onlinewebshop.net/kayla_workouts_free.pdfIn PDF document text
    • http://kojidazazixom.rf.gd/vebezilewegivupuk.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/shareholder_agreement_template_australia_free.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_off0000f20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20E 5468 bytes
SHA-256: f01f5c27b2331ee05fdfcfda829222ca08feccc5e7667a38c0664edb2cdfe6d1
font_01_sfnt_off000104b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B3 11092 bytes
SHA-256: 6fd8d1093f8be53e8042869f0082e07ceb0e1234c98cf59c8eb77dbe494e696c
font_02_sfnt_off000129f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71