Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8a249377696f58…

MALICIOUS

PDF

77.3 KB Created: 2021-03-28 11:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a9e171e50976a341a5672dd4758c805 SHA-1: 33fb55b697cce87c71e6006622147d318f1d49ac SHA-256: be8a249377696f58a5f95a6a2ad5446a2dcde6444c8a6ad5815038823ef22e53
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The document body, though heavily obfuscated, appears to contain metadata related to its creation, but no direct textual lure is discernible. The presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/wix?keyword=american+pie+nadia+quotes
    • https://cdn.sqhk.co/xoresarib/jbugdgj/xurusosixi.pdf
    • https://cdn.sqhk.co/wexapitode/gR8Y2kq/93094707909.pdf
    • https://cdn.sqhk.co/guwezasov/cBzihdG/transfer_content_manually_from_android_to_iphone.pdf
    • https://cdn.sqhk.co/mafowixodi/adUgcid/voviweve.pdf
    • https://cdn.sqhk.co/xilasexiki/IehbjeK/telusuvinumiz.pdf
    • https://cdn.sqhk.co/papusabefo/ieDvihb/razas_de_perros_grandes_pelo_corto.pdf
    • https://cdn.sqhk.co/bovutolomevo/gFqvieO/battle_simulator_games_ps4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/buganabowumujef/ambari_kannada_full_movie_free.pdf
    • https://uploads.strikinglycdn.com/files/14fc0eca-4d72-48e7-ba15-115ab530b0ee/38904373333.pdf
    • https://uploads.strikinglycdn.com/files/f0cbe8cf-dcd6-490b-a8c8-e943d763f41a/daguxazetapolimenurobekex.pdf
    • https://uploads.strikinglycdn.com/files/3fddac45-a02f-41e8-954d-6316766c7f66/entry_level_mechanical_engineering_jobs_in_orlando_florida.pdf
    • https://uploads.strikinglycdn.com/files/65d3fb0a-2a57-4c52-8122-281fc5059ec1/libro_de_calculo_diferencial_e_integral_conamat.pdf
    • https://s3.amazonaws.com/woxojuxafopuv/98912763199.pdf
    • https://s3.amazonaws.com/fefurorobumi/acrobat_x_pro_software_free.pdf
    • https://uploads.strikinglycdn.com/files/ed049a85-da68-4b42-82a9-8c883794f5b6/les_miserables_25th_anniversary_cd.pdf
    • https://uploads.strikinglycdn.com/files/50485b8f-e477-4753-b9c2-c56ffa0eac0e/ejercicios_91_algebra_de_baldor.pdf
    • https://uploads.strikinglycdn.com/files/e553f5a6-aebd-4b82-85a5-3fdd7a00f360/57641280509.pdf
    • https://uploads.strikinglycdn.com/files/144782e2-0026-41c9-87da-4b154ba95a70/finilejisuguvok.pdf
    • https://s3.amazonaws.com/pujinit/beautiful_cute_couple_images.pdf
    • https://uploads.strikinglycdn.com/files/1756f7ae-b298-4d02-a406-6698aa0ecfc8/guitar_chords_for_hindi_songs_in_sa_re_ga_ma.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_off0000f198.bin
d7c328e61f7af0d0cbbbe0602d48dbaae18f57357c6444c6149ac143e743522f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 5304 bytes
font_01_sfnt_off00010385.bin
9e1296801b4583a8aa0eec8545f76d41c8e52ec8b47ba9faf5bf083e3787bae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10385 10908 bytes

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