Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da1d902cf300dbb…

MALICIOUS

PDF

71.6 KB Created: 2021-03-14 07:01:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4116147d0966cfbca9c00859b6b4b886 SHA-1: 5a65856fcba65d263c376f6f97755a5ff7d67516 SHA-256: 0da1d902cf300dbbe05c0ffe31652cbb480262bc34386e1408cd89b1f7c90677
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The document body, though heavily obfuscated, contains text related to a PDF download, suggesting a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=bridal+chorus+from+lohengrin+pdf
    • http://lnstagram-copyright-confirms.com/verbos_regulares_e_irregulares_en_ingles_en_pasado_participiorbuqy.pdf
    • https://cdn.sqhk.co/rasirise/iIjiPgg/kemuvidopeparo.pdf
    • http://rapisakaxo.66ghz.com/h_d_3d_wallpaper.pdf
    • https://cdn.sqhk.co/soxesemu/O8hfpuI/27834159777.pdf
    • https://cdn.sqhk.co/modesarox/gfhgTdm/project_drift_cars_for_sale.pdf
    • http://study-english-05.site/pradhan_mantri_awas_yojana_application_form_in_kannada8vkvm.pdf
    • https://cdn.sqhk.co/gimexigerub/3hiWQgg/car_racing_shooting_games.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pumobopebog.epizy.com/how_to_connect_epson_l365_printer_to_wifi_network.pdf
    • http://xesepodine.rf.gd/andante_andante_abba_sheet_music.pdf
    • https://s3.amazonaws.com/xukirizugukugi/regojeribepulevemimeso.pdf
    • https://uploads.strikinglycdn.com/files/8a1e80a6-2f9b-4370-bf69-fe7d6ee5a31c/hisense_air_conditioner_remote_symbols.pdf
    • https://uploads.strikinglycdn.com/files/73c4c95d-bd17-4930-92ed-e9189cc9e07c/rakapadewunipukavetux.pdf
    • https://uploads.strikinglycdn.com/files/6e8cd408-e489-4a58-9942-2453f1fc634d/90412907639.pdf
    • https://uploads.strikinglycdn.com/files/1e9164aa-27f1-4fc6-bc47-3c7925ca519a/22307571577.pdf
    • https://s3.amazonaws.com/zurovajij/lijerunikigudowatu.pdf
    • http://zukevajisuw.rf.gd/91742480109.pdf
    • http://nalirabagetovop.epizy.com/64060585368.pdf
    • https://s3.amazonaws.com/mekonulegipero/jowubegatemiji.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d89c.bin
77c081761fec39d6d000d98762f30cb631b86666cccfafa799a7ddee37f0e594
pdf-font-stream PDF embedded font (sfnt) at offset 0xD89C 5616 bytes
font_01_sfnt_off0000eb8c.bin
16f9595dbabcb11c76b8e4e0984ed5064d45ca06209898e67b3dc35d1296fef2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8C 11172 bytes