Malicious PDF — malware analysis report

Static analysis result for SHA-256 640bde86d91fd4c9…

MALICIOUS

PDF

77.3 KB Created: 2021-05-14 11:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: da2014f47b8703cab86e86a3264d903e SHA-1: 684f8d096d0a1d92d67a50c80ae07ac967c85c49 SHA-256: 640bde86d91fd4c98bfa6695c754faf7b4ddcfaac53ef52038e45fe7ca286b5f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious URL, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/strik?utm_term=how+did+myles+munroe+die PDF link annotation
    • https://rigagebefizo.weebly.com/uploads/1/3/4/6/134631069/jozafemes-tujeneg-vukupuzog.pdfIn PDF document text
    • http://dresdenpharma.ru/wirisijasoxetomuvegezan7w1hc.pdfIn PDF document text
    • https://najabokaxosol.weebly.com/uploads/1/3/5/3/135300306/af35904162a523.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/f60621c538333.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/gchjgiW/hitman_marrakesh_sniper_assassin_professional.pdfIn PDF document text
    • https://cdn.sqhk.co/fonizijodi/9Gjjhez/knife_throwing_techniques.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/wXi1ge1/aashto_roadside_design_guide_5th_edition.pdfIn PDF document text
    • http://skout.tech/797486685971ai4x.pdfIn PDF document text
    • https://sizutipaji.weebly.com/uploads/1/3/2/3/132303075/51232f5e.pdfIn PDF document text
    • http://tapidiv.medianewsonline.com/buku_paket_agama_islam_kelas_10_kurikulum_2020.pdfIn PDF document text
    • http://ketousa.site/nefaxezupijimitokedolu773so.pdfIn PDF document text
    • http://static-get.top/kubimonirepiwiseteromadnpava.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/jaCWgcb/lefetilaluxer.pdfIn PDF document text
    • http://cosmosqrab.online/how_to_get_sim_card_out_of_alcatel_flip_phoneqokhr.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/1343824.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/mipizaju/46104822134.pdfIn PDF document text
    • http://larovitivejel.atwebpages.com/15786364478.pdfIn PDF document text
    • http://xovefopu.myartsonline.com/antecedentes_de_la_administracion_de_operaciones.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/mogizineraporafu.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/91023823787.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/58641227027.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/attestato_di_conformita_infermiere.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/90659051492.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/rujurofeza.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_off0000f24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24F 4916 bytes
SHA-256: 4e41f9ba56b0ec44e245c93fb463b9a79465c89acb32b7f7361fc1357af003f7
font_01_sfnt_off00010304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10304 10696 bytes
SHA-256: c7667a3ee2df5199102bff6957073542adbef882896162905db199b6f2d274be

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