Malicious PDF — malware analysis report

Static analysis result for SHA-256 337107564d9ddab8…

MALICIOUS

PDF

69.5 KB Created: 2021-03-28 09:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2864f6af3544d3d2486f3dced9439579 SHA-1: a332f534298749aada3d4ead1a394888b7b377f5 SHA-256: 337107564d9ddab85e77bed8d3a0dd9eaddfdd2cef42d5ba0a2f8a5c8241e641
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/award?keyword=basic+computer+skills+pdf+in+telugu
    • http://duwinijuj.mypressonline.com/the_grand_inquisitor_brothers_karamazov.pdf
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5fe857a79bfd8.pdf
    • https://cdn-cms.f-static.net/uploads/4417408/normal_604b4c1293160.pdf
    • https://cdn.sqhk.co/tuwetebep/QgdZfii/how_to_draw_cartoon_lips_for_beginners.pdf
    • https://cdn-cms.f-static.net/uploads/4372985/normal_6039ae8719a26.pdf
    • https://cdn.sqhk.co/zuxafopagad/Y9idrjg/auto_theft_gangster_hack_download.pdf
    • http://nitesufi.sportsontheweb.net/cartooning_symbols.pdf
    • https://static.s123-cdn-static.com/uploads/4382961/normal_600870295464d.pdf
    • http://pajuwepubawip.sportsontheweb.net/cracking_the_pm_interview_github.pdf
    • https://cdn.sqhk.co/pedidagow/gctlwja/blue_book_used_cars_for_sale.pdf
    • https://cdn.sqhk.co/joduragenep/igcEgdA/83242904788.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jadukubilelib.myartsonline.com/dogakirazewiwajuwipipono.pdf
    • http://busagawama.epizy.com/homeless_bird_full_movie.pdf
    • http://mimodiko.epizy.com/michelin_guide_nyc_2020.pdf
    • https://s3.amazonaws.com/zesixefe/msi_afterburner_for_pc_windows_10.pdf
    • https://s3.amazonaws.com/jubiferekaka/tazalipudanozuremopor.pdf
    • https://s3.amazonaws.com/gizonukorad/jelojapere.pdf
    • https://s3.amazonaws.com/sivanira/crossword_cheats_answers.pdf
    • http://piluwut.epizy.com/articulation_station_app_android.pdf
    • https://s3.amazonaws.com/wisuw/tibia_knight_equipment_guide.pdf
    • http://bavajozobe.epizy.com/upcoming_android_wear_os_watches.pdf
    • https://s3.amazonaws.com/povodijirig/blanche_neige_histoire_originale.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_off0000d508.bin
e21b07e55013a543f361348086008e624b62c36560059252896be1d877abd5b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD508 5588 bytes
font_01_sfnt_off0000e7f5.bin
f6a903da9c336ef27b0fe0fea8dbe6f4200f79f2d58cf1ae104c6a2704467db3
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F5 9680 bytes