Malicious PDF — malware analysis report

Static analysis result for SHA-256 0534415cabcb25f4…

MALICIOUS

PDF

89.9 KB Created: 2021-05-20 22:03:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 368389a7add7fc4485d8fb7ed213b4ef SHA-1: 307c4d2e86f6964bddc7d879adb151c8ef2581fb SHA-256: 0534415cabcb25f49b0d50f40b0a92bacf5f29df54cc16494ae169161e70bd62
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely used for phishing or to serve a secondary payload. The document body, though partially corrupted, suggests a lure related to business card templates.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/strik?utm_term=checklist+formato+para+imprimir+tarjetas+de+presentaci%25C3%25B3n PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/62331554145.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/letterhead_design_free_word.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/little_red_riding_hood_characters_images.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/isrs_4400_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/scrum_master_certification_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93b4623-627f-4fa9-b233-6724ef098051/what_are_the_steps_of_closing_process.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc67c39-742f-4540-addb-59f0e67082fe/pepenawegusisuvode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c0eb96c-5b27-4fe9-b891-ba66f7abb23b/garmin_nuvi_2597lmt.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/bootstrap_html_css_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/jurnal_cacing_tanah_lumbricus_rubellus.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/instagram_er_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/taroxalatujajobenadapi.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/sopajuradidurokigapuju.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/parovufupaliwovon.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/wd_my_cloud_4tb_personal_cloud_storage_flash_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/rumon.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/17874091968.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/25322348546.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/smokey_eye_step_by_step_picture_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6732a3-fcff-4ad0-a9ba-a53f64d6a769/nogejukiganunobexilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f36ff432-3a72-426e-b7c1-ff656ff3959e/capresso_infinity_conical_burr_grinder_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/buxukojudadusavovixubib.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/giwum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ec0bdd-be49-4181-84fc-95aad19740f5/jififuzoterune.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_off00011e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E20 5576 bytes
SHA-256: 932efebaeff73af5b4ba7847e3c0bfb8e65dd3b712d40ed2cd54e7b7809f5bd1
font_01_sfnt_off000130ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130AB 11788 bytes
SHA-256: a70a430429c9430b4ca282376f4373a32cbc0d8ee39d661f25c08241aaafda38

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