Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7267255a96c9ef…

MALICIOUS

PDF

73.3 KB Created: 2021-03-09 04:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 02b252367b0ffd8a1705b5cf4e86d8f2 SHA-1: 23702a3968f5a0705170ed9c7bcc1415b4c9b87b SHA-256: 9d7267255a96c9efa6aa43ce0dc431205b50165ee0ed3d8dba68ec6d93725bd7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URL points to a suspicious domain, likely serving the malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to trick the user into downloading a secondary payload, consistent with spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/123?utm_term=mathematics+2019+answer+key PDF link annotation
    • http://theboldpantsproject.com/what_is_the_plot_of_the_twilight_saga6l9pv.pdfIn PDF document text
    • http://rubeatyshop.xyz/splendor_board_game_arena66pkx.pdfIn PDF document text
    • http://twitter-center.com/how_to_graph_linear_equations_using_a_table_of_valuesofvs9.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/34345928314ibr10.pdfIn PDF document text
    • http://kernig.online/939574977961nkrc.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/gewuwasi/blaggers_guide_to_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2de349a-5169-4924-a2a5-a566e7fe3783/drawing_beginner_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/2317220017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/329c83e7-2f30-4607-98b5-92e686b681de/76895627068.pdfIn PDF document text
    • http://tilixufevoj.epizy.com/lagu_benyamin_sueb_ondel_ondel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8fd2167-10dd-40a0-9b28-014741159ec7/what_are_the_4_personality_theories.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/spelling_bee_list_2020.pdfIn PDF document text
    • http://zegudonokor.epizy.com/badshah_cinema_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/stay_hungry_sebastian_maniscalco.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b688d3-ee19-47fb-a306-5b21ed611f85/e5_vs_960.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/alone_movie_video_songs_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/android_tv_remote_control_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/681545ea-988a-4d78-a513-e7f07a124819/manual_camara_canon_powershot_sx710_hs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c04c49-9727-4012-b308-8ff7642d23cf/how_long_should_i_cook_sweet_potatoes_in_the_air_fryer.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/pizufiguzilakavige.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/87474036690.pdfIn PDF document text
    • http://samowegepor.rf.gd/puwepunakomovele.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/bijonijetanigumalokig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ace135-5255-49dd-a246-d7d8ecb989cb/does_xfinity_offer_dvr_service.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_off0000e019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE019 5752 bytes
SHA-256: a1abde41131cb7752d1c65218605d7334db73b8563c10ed7c87994bb47d770c7
font_01_sfnt_off0000f3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AA 10728 bytes
SHA-256: 318711bd715db23635a2d22038dd04451238f8e06690f34c5e8a32d71bcc26a8

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