Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b701a16944b936…

MALICIOUS

PDF

74.7 KB Created: 2021-04-05 12:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6cb87d5b864ce66d7cb4459a482adcb0 SHA-1: 5f13b5b922409fa6a31d5bc2a7b8ab72efedf6f1 SHA-256: 68b701a16944b9362b66b47af8f1d418eaf16b517b3e2bffeedee9ab6fe8e2a9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting 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://maypoin.ru/strik?utm_term=naming+angle+pairs+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403823/normal_5fffc195b0c17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486775/normal_605c1cd553727.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424666/normal_60014ca9ae3ca.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/muvevanepen/neonatal_jaundice_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/aula_formas_geometricas_educao_infantil.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/what_does_4_beeps_mean_on_a_pc.pdfIn PDF document text
    • http://gifazewuki.epizy.com/26963080295.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/brazilian_blowout_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/pizetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e936dd-3fc2-44c4-b4e2-fa3bf8b97dc0/do_heaters_have_pilot_lights.pdfIn PDF document text
    • http://mudopijafaj.epizy.com/apa_citation_manual.pdfIn PDF document text
    • http://mutodavop.rf.gd/kefir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da999b55-1032-4165-8fbf-867371a2aad6/samsung_tablet_wont_turn_on_after_factory_reset.pdfIn PDF document text
    • http://novoniranalisa.epizy.com/cursive_alphabet_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/nosamukixunakiw.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/krups_coffee_maker_cleaning_with_vinegar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c536b68-30dc-4074-b6e4-6994e1879d58/how_to_find_antilog_in_log_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2109b3d0-b011-4ba8-af22-60354a6cb77c/99181231637.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/best_free_audiophile_music_player_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/ganesh_ji_ki_aarti_song_pagalworld.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_off0000e8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BB 5360 bytes
SHA-256: e6ea92314f24554503708306193e945e05ebdc3112a1d20809d147e69ae08f27
font_01_sfnt_off0000fae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE3 10376 bytes
SHA-256: fb63373425317b30209cf51d1fab2f7124e6df8aaf3559a0c0758bc80c37a5d0

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