Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a53707c3cef5051…

MALICIOUS

PDF

70.6 KB Created: 2021-03-20 12:33:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 070db494225a5e455dc68f3883b64e7f SHA-1: 58a2d820230e0bb025c48a4996277f5247738b57 SHA-256: 0a53707c3cef50517c3943e714408eb355a7cf1d00fdc404c9e50d3634c24c71
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website designed to appear as a search result for 'apex bridge math answers'. This URL, 'https://maypoin.ru/wix?keyword=apex+bridge+math+answers', is flagged as suspicious and likely serves as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://maypoin.ru/wix?keyword=apex+bridge+math+answers PDF link annotation
    • http://dazavaluk.mygamesonline.org/the_temporality_of_the_landscape.pdfIn PDF document text
    • http://hookup750.website/the_cultural_landscape_12th_editionxlklm.pdfIn PDF document text
    • http://wiwajekirutiw.scienceontheweb.net/tax_administration_act_tanzania.pdfIn PDF document text
    • https://cdn.sqhk.co/peretudiwi/Ohiz1nQ/12507109728.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/2hcKgj0/sudakobomixeluv.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/jdgdhiS/era_of_celestials_elysian_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzowadijavu/osZgiib/tobeco_super_tank_0._5_coil_wattage.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/XiitjgM/gangstar_vegas_4k_wallpaper.pdfIn PDF document text
    • http://xovitixekewelom.scienceontheweb.net/sagozedusilotonojeromosu.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/gdiiMgi/my_business_apple_maps.pdfIn PDF document text
    • http://normab-id.com/contrato_de_arrendamiento_de_casa_sencillo_wordbevkt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://85377554-d84f-42a6-a955-c87f7d5d3d8c.filesusr.com/ugd/dd4472_4de29fdfca8f4bdab111c1154f18e6ba.pdf?index=trueIn PDF document text
    • https://3c8d80e7-2998-4b53-b1db-ea2053e4eee2.filesusr.com/ugd/5c8c55_63bd61688d264826b805b773556fffef.pdf?index=trueIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_6c5d9a2348d44501bbbb79d136efa676.pdf?index=trueIn PDF document text
    • https://eda93683-a6ca-45e9-8056-ca7adea7f1dc.filesusr.com/ugd/d655db_94c5f17a3a06487bae65a60abedb515c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/reading_comprehension_worksheets_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/posoresofisaralemubosu.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/sakikep.pdfIn PDF document text
    • https://43dda2ad-fadc-418c-a2d5-4b96cca2ed60.filesusr.com/ugd/6eca9c_25e684d70fcb420c97bf0ace60766c66.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/how_many_faces_edges_and_vertices_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/estrategias_de_afrontamiento_emocional.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_off0000d542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD542 5628 bytes
SHA-256: 419f1491ca0195a4b3dbf209488a543e6ee78d4aee4e68bae7308f9667039363
font_01_sfnt_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 10856 bytes
SHA-256: c0fd906fa3cfa230454f0b038a327c10e8d97a091a72651c14e50cc906a6fa5b

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