Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d298be7df6cbd07…

MALICIOUS

PDF

76.7 KB Created: 2021-03-28 21:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e05c300e5286b6c9aec8ea28006d3f1c SHA-1: ec8b98bc8b13138b343d2df5a79a74ebf89f1f59 SHA-256: 8d298be7df6cbd07b53f844795cd60ee4776f8c7b5d149f4b18f8ae92ba6d725
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=adaptable+architecture+theory+and+practice+pdf PDF link annotation
    • http://cookwellbakewell.com/38337504967h6pud.pdfIn PDF document text
    • http://heliusdesign.ru/70864749805jmjju.pdfIn PDF document text
    • http://ourfanz.com/adobe_project_voco_download70cgn.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/gg5jcQg/jofobavikujawa.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/jjgcjiX/bluestacks_hd_app_player.pdfIn PDF document text
    • http://triple-doska3.club/nova_ortografia_portuguesaf9md0.pdfIn PDF document text
    • http://dimax-matrasy.ru/sunbeam_swm6000_manual77lyn.pdfIn PDF document text
    • http://checkmycredit.info/stanley_15_amp_battery_charger_bc15bs_manualc15f4.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/ghhe23j/78663701612.pdfIn PDF document text
    • http://weraka.online/8845454236o8oo4.pdfIn PDF document text
    • http://shoop-fl.ru/6577365482335k87.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/wjfjaji/plastic_bottle_vector_free.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/kewakuko/transformer_garage_en_habitation_prix.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/soravakozelesajizeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9deebb-3501-44ed-8fd4-8c1e638c7e57/72748650899.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/juwepiduzokolerena.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/57200700502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a443c8-ee30-4198-8f12-c67898198e82/hp_deskjet_3050_driver_download_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d24fa5-5a07-4017-8512-1d911c750189/the_creature_of_jekyll_island_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802aac50-a661-40b1-920e-0639884f7316/75377476277.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_off0000f080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF080 5296 bytes
SHA-256: 16a1c123aafbb6871c53fe76d4036c9f03986299c14ba10a10d276e80112e255
font_01_sfnt_off00010281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 10208 bytes
SHA-256: fdeed76694e84d36f915083b9f64e7ad48ebb3febceaf10c1277d40f10fe0555

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