Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7059fcb40963f8…

MALICIOUS

PDF

62.6 KB Created: 2020-11-20 12:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bbd19030fe94a26f88d55f20233ae016 SHA-1: daca870b7b237710f11acd1fe6261a5f8bcab8d8 SHA-256: cb7059fcb40963f8aa9f705c9dfd1549566c8fd1923ab045daa3f852ed9b7210
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-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://traffine.ru/strik?utm_term=simbologia+iso+para+diagramas+de+flujo PDF link annotation
    • https://movuvoxuwonorad.weebly.com/uploads/1/3/4/6/134667433/fewodimuwiwa_zoburulu.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/wakebodi_dowalifowu_nojobetug_paduwatutuva.pdfIn PDF document text
    • https://piwazolobaki.weebly.com/uploads/1/3/4/7/134714131/2962225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f8fa2682b77c.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_5fa1945216f66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474979/normal_5faf0e4f6c4e8.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/6001749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480142/normal_5fa9617d3ee0c.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/susopuzupure/waxutinutejopanud.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/85932136812.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/makalah_ashabul_kahfi.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/successful_college_writing_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/benchmark_antutu_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gevosafalolizesemejisow.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/lakewood_bus_terminal_wa.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_off0000b6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B8 5680 bytes
SHA-256: 4630995c5719d3718bd53875b5b6a15c0a7063440bcced2d614db13191dacd39
font_01_sfnt_off0000c9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EF 11020 bytes
SHA-256: 49d29dc008a47f93d5c935fac041c26b0c671ffe277dc6d3a56065226c744e21