Malicious PDF — malware analysis report

Static analysis result for SHA-256 730ca6a131fe62f1…

MALICIOUS

PDF

80.7 KB Created: 2021-04-12 02:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6af1e8edfed11e18d334a13a99543637 SHA-1: 29498a21e73305c36a639e2a37e99d2abc60844e SHA-256: 730ca6a131fe62f1f5a97075f6d2fc563e8ca5e0d05aa09a037bbd77d06c6658
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'leonvi.ru' was extracted, suggesting a phishing attempt to lure the user to a malicious website. No scripts were extracted, but the PDF structure itself contained the malicious URL.

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://leonvi.ru/strik?utm_term=how+to+get+lockpicking+wow PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489409/normal_601244246ed0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366382/normal_5ff186dc38a31.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/42641766849.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/bijumoresoxulijutu.pdfIn PDF document text
    • http://gejikojaki.scienceontheweb.net/exercice_verbe_etre_et_avoir_avec_correction.pdfIn PDF document text
    • http://xubajur.mygamesonline.org/bioethics_definition.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/inflacin_y_presupuesto_de_capital.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454162/normal_5fced1a1ca962.pdfIn PDF document text
    • http://ruvinowuge.scienceontheweb.net/waste_to_energy_proposal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_e9bfeecab24243cfb3c8c24519701326.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/titugome/54788708250.pdfIn PDF document text
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_978578fed34c4b05a0c3ccbaabac976f.pdf?index=trueIn PDF document text
    • http://rexefobixavater.myartsonline.com/vias_administrao_de_medicamentos.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/report_burst_water_pipe_tshwane.pdfIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_a00ea35a4d4b4515aa637a795d5e068c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/benuka/vimana_shastra_in_sanskrit.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/kaba_ilco_locksets.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/lafipalituzedexibixata.pdfIn PDF document text
    • https://e5058785-d3d1-442e-b0ad-d0045053dde7.filesusr.com/ugd/17c622_76b348434e48402f8d7d3a8276f0b7e0.pdf?index=trueIn 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_off0000fef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF5 4736 bytes
SHA-256: c3f900e5bfededfe0246f1f67dee3c06ac1cbb067a76dc46de5fd29e521fad36
font_01_sfnt_off00010f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F45 11696 bytes
SHA-256: 722ef353b820b517fe824248068aaa3f17eb0562826c8181fcb955a4739a27af

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