Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ea79b671c755e8…

MALICIOUS

PDF

87.9 KB Created: 2021-04-25 01:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 76da588f407dd961d8c437f1777647da SHA-1: 080888b90e79c5b7e745f878082527434d2b7e5d SHA-256: 28ea79b671c755e8c9cf33d98f970acc955df7e1067f0088e4784475333d3e24
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to Minecraft, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards the use of JavaScript to facilitate the redirection to the malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/strik?utm_term=how+to+make+a+mob+farm+1.16.2 PDF link annotation
    • https://cdn.sqhk.co/butuxolevu/jtbYUwv/3d_flip_simulator_hover-_board_stunts_rider._com.pdfIn PDF document text
    • http://vawurabel.mygamesonline.org/autogenics_3._0.pdfIn PDF document text
    • http://nuxidokugaleme.iblogger.org/jerunotakelagijefixalira.pdfIn PDF document text
    • https://cdn.sqhk.co/rorazelesu/gevicge/61438422545.pdfIn PDF document text
    • http://befujukipepejem.mygamesonline.org/gunuxelukonunanuta.pdfIn PDF document text
    • https://cdn.sqhk.co/suxidixip/yHTXtgf/koroda.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/ggrRlgg/jegajuxadamawebasikutuf.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/plague_disease.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://genenapukiral.epizy.com/67520046146.pdfIn PDF document text
    • https://efec373b-cb85-4617-95c0-ca1809d574ea.filesusr.com/ugd/9529b1_29075566ac674540ac7aabaed44652fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/best_bollywood_movie_sites_for_pc.pdfIn PDF document text
    • http://kafopozunu.epizy.com/destination_a2_grammar_and_vocabulary.pdfIn PDF document text
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_7f25c0caf0874f01aa41d5f12fa78b38.pdf?index=trueIn PDF document text
    • https://9f7573d5-7b83-49a5-9b97-b0679d2fa1e3.filesusr.com/ugd/891219_cab9badabbfe4eb2848e3e3378b7a2c5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/figidireki/pottermore_ilvermorny_answers.pdfIn PDF document text
    • http://sinalowus.epizy.com/36014821124.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/midusebobusomitamot.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/bizasujoge.pdfIn PDF document text
    • http://kiwimusef.epizy.com/nedopilenoz.pdfIn PDF document text
    • http://bexukavibume.myartsonline.com/autosys_commands_in_unix.pdfIn PDF document text
    • https://167c2301-eccc-4e3a-a609-38a4f17b9bf8.filesusr.com/ugd/b1dabf_84ca15e1ccf94b56ab73aecc923eebd8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovezux/maze_runner_2_full_movie_download_in_tamil_dubbed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A52 4964 bytes
SHA-256: ce607bc889256e8a741fe78f9ce29286b523bf9da2e3210c9e01e611337b68a6
font_01_sfnt_off00011b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B52 12040 bytes
SHA-256: dfd941c2a8758c33bf42ba1401b596e8629514aabcc76564ccdb1a189c737018
font_02_sfnt_off0001442c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1442C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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