Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e167a094fa8145…

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 21:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb1653731e52316b40b91492ec1e9842 SHA-1: 21505b4b654ea49470c148b103e4aacb8f6ce242 SHA-256: f3e167a094fa8145c5f80405f838f1768ba95cc9bb9b88e4222674abff3e22a9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing or malware distribution, suggesting the document is a lure to download a second-stage payload. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly suggest a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/award?keyword=pdf+to+word+converter+online+nitro
    • https://static.s123-cdn-static.com/uploads/4379855/normal_5ff59cd81147b.pdf
    • https://cdn.sqhk.co/pafevola/hheiajh/mx_player_download_app_for_pc.pdf
    • https://cdn.sqhk.co/lokatatape/hdYGngj/74037896569.pdf
    • https://static.s123-cdn-static.com/uploads/4426957/normal_5fdfddea99b78.pdf
    • https://cdn-cms.f-static.net/uploads/4498994/normal_601123e71dd53.pdf
    • https://static.s123-cdn-static.com/uploads/4403406/normal_5ffb40164705d.pdf
    • https://cdn.sqhk.co/pedajobu/Ljg8fT7/xasudi.pdf
    • http://bapadama.medianewsonline.com/affirmations_for_weight_loss.pdf
    • https://cdn.sqhk.co/vifutetax/SjcwuKp/22550559997.pdf
    • https://static.s123-cdn-static.com/uploads/4420756/normal_5fc839623fccf.pdf
    • https://cdn.sqhk.co/rojarimeg/OFihnxP/descargar_device_unlock_at_t_apk.pdf
    • https://cdn.sqhk.co/mogilirexexa/c3jd0jj/sfx_resorts_reviews.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wewuxuviwar/58444873337.pdf
    • https://s3.amazonaws.com/dewazewokib/zejukuxafudafuwowikus.pdf
    • https://s3.amazonaws.com/povelenavuviw/the_crucible_character_relationships_map.pdf
    • https://s3.amazonaws.com/mudurixo/football_transfer_news_app.pdf
    • http://dolanuvusipegu.myartsonline.com/startup_owners_manual_download.pdf
    • https://s3.amazonaws.com/bagisi/71203320977.pdf
    • http://sipanokule.onlinewebshop.net/a_song_of_ice_and_fire_reddit.pdf
    • http://lugifer.onlinewebshop.net/belisarius_cawl_the_great_work.pdf
    • https://s3.amazonaws.com/rekorewexidiwo/coca_cola_company_sustainability_report_2018.pdf
    • https://s3.amazonaws.com/dugibabafod/crs_self_certification_form_singapore.pdf
    • https://s3.amazonaws.com/veledabejufi/nikon_d5200_camera_price.pdf
    • https://s3.amazonaws.com/novifamigot/christmas_carol_songs_malayalam.pdf
    • https://s3.amazonaws.com/xopugup/19169926743.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_off0000ed7d.bin
9e0e06066283b2b7225bb7a7c17cc508fab9d9e080c5f057a04be448d132222e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED7D 4780 bytes
font_01_sfnt_off0000fde9.bin
40ae9f0b3df9c5d30960977c2202f0e9c98a449fb0f92bf8f466fac3a067a7cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE9 11832 bytes

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