Malicious PDF — malware analysis report

Static analysis result for SHA-256 6391af6caf671a07…

MALICIOUS

PDF

76.3 KB Created: 2021-03-24 12:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3204892136ee6736b7eb4cefe57d8fcd SHA-1: 24e5cca3de08b76ecff455bffecf3b5633958829 SHA-256: 6391af6caf671a07f4745a70ed93cd5edb4c99f5ea1eac7645b54fcc086270dd
96 Risk Score

Malware Insights

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

The file is a PDF that contains multiple embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI heuristic suggests the document is designed to redirect the user to a potentially harmful website, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/123?utm_term=bvcam+windows+7 PDF link annotation
    • http://zhk-rekord.info/examples_of_supply_chain_management_jobsqj5cc.pdfIn PDF document text
    • http://servempieza.site/the_strangest_secret_in_the_world_summary62ld8.pdfIn PDF document text
    • http://sudilufib.getenjoyment.net/98321861616.pdfIn PDF document text
    • https://zobilajes.weebly.com/uploads/1/3/2/6/132682335/xibisuxesimopuboto.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/how_to_clean_a_proctor_silex_coffee_pot.pdfIn PDF document text
    • http://7lessons.space/60132464642kyzpo.pdfIn PDF document text
    • http://savineme.mywebcommunity.org/fiitjee_admission_test_sample_papers_for_class_11.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/ijgdlfG/keditulom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422631/normal_6059c15e0ec18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5fcbb09b61e52.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/6488572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_603277f0973ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5ff571ff94db6.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/diagimk/nabisofugotiwuga.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/tifuzonafozogekuxagelijixvf8m.pdfIn PDF document text
    • https://cdn.sqhk.co/gomiwopizi/gdid16f/97172028186.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/baxegezivumi/47837333894.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/62063607571.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/letter_of_credit_definition_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/59342728161.pdfIn PDF document text
    • http://kimawawasero.onlinewebshop.net/how_to_setup_dvr_for_remote_viewing_ddns.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_off0000eda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 5240 bytes
SHA-256: 7e08b422fc4e471327f6d4ae9f1e6ead1fa92b018e504274a13136136e89b2df
font_01_sfnt_off0000ff82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF82 10936 bytes
SHA-256: 7c2d87390800ee36ed63e4501072b4ed85a6d8404ad3fb9ca2b52e121ac56eab

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