Malicious PDF — malware analysis report

Static analysis result for SHA-256 5396dfd883ba97df…

MALICIOUS

PDF

73.9 KB Created: 2021-02-18 12:28:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bf394414e8e552b4924f28fe028153aa SHA-1: 1901ac5f34d6f312ebd342be4ec63357a5a4bc0f SHA-256: 5396dfd883ba97df56d61cfdc4e945e95bf8d6960a9e5c74f810a351c66f8210
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://bologen.ru/123?utm_term=data+mining+software+definition PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469375/normal_5fc6b6616fabf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_5fdc43dc5add3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403422/normal_600360e8e5191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385859/normal_5fccc7abec1ad.pdfIn PDF document text
    • http://yogait.space/keyword_planner_excel_template89vv5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489412/normal_601fe11bb163d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5fee771018d66.pdfIn PDF document text
    • http://216tilford.com/startup_business_plan_examples_ukjya8q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479226/normal_600706541e6ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485446/normal_5fea0381b20c1.pdfIn PDF document text
    • http://gallery-shop.site/lecturas_de_reflexion_para_secundariazu8ex.pdfIn PDF document text
    • http://vinograd.io/test_statistic_for_paired_t_test_formulaxpdsm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489409/normal_5fdf5afe5916a.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/sojebelevenex/93720117577.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/avatar_3d_full_movie_1080p.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_off0000e3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B0 5288 bytes
SHA-256: baeedd47ec96d2f6bc9cd36144cc87407f768457a5ff83f72a440d132f4c4b37
font_01_sfnt_off0000f5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AD 10924 bytes
SHA-256: 662e08858e607401e923fc392852d1b7463caa1952e033e67abf2e8fddeb844f