Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba222b7bfa5ac75…

MALICIOUS

PDF

76.9 KB Created: 2021-03-22 21:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 838a6421dab00dd8b14fae89473f158f SHA-1: afb1c65a4b67258f91b2cc09f46776fd965a9625 SHA-256: 4ba222b7bfa5ac757d85fffb24642a16664a514f5402a20b259c03fe636ab2d9
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'revetments advantages and disadvantages', likely a lure to direct the user to the embedded URL. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wix?keyword=revetments+advantages+and+disadvantages PDF link annotation
    • http://fumigatoff.online/a_guide_to_rational_living_reviewwtiof.pdfIn PDF document text
    • https://cdn.sqhk.co/duwutawuna/nxiihig/the_art_of_war_book.pdfIn PDF document text
    • http://good-production9.site/chess_playing_tricks_for_beginnersxej48.pdfIn PDF document text
    • http://ayazshabutdinov.club/kufonethwdx.pdfIn PDF document text
    • https://cdn.sqhk.co/salulilo/760vjdB/top_rated_high_graphics_android_games.pdfIn PDF document text
    • http://themarkuzmusic.com/toro_lx425_deckwyag1.pdfIn PDF document text
    • http://befigter.xyz/renewizisirupehzi2d.pdfIn PDF document text
    • http://forpost-electrica.ru/diagnostic_radiology_lab_answer_sheet_patient_886ilr.pdfIn PDF document text
    • http://ver-alex.website/french_imperative_worksheettmzyp.pdfIn PDF document text
    • https://cdn.sqhk.co/nozalodugavi/Mg7T2ib/chapter_1_introduction_to_chemistry_worksheet_answers.pdfIn PDF document text
    • http://nakomajuvedina.iblogger.org/why_wont_my_hamilton_beach_flexbrew_work.pdfIn PDF document text
    • https://cdn.sqhk.co/vafizolubev/dgc9kgg/premier_league_fantasy_gameweek_3.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/0hhiggj/kebol.pdfIn PDF document text
    • http://nasporte1.fun/984070059509lv5g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosodesuvivat.epizy.com/xezejesafepemisosarodo.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/how_to_write_a_treatment_for_tv_show.pdfIn PDF document text
    • http://fukasutatota.rf.gd/62794601462.pdfIn PDF document text
    • http://xigavuda.rf.gd/equipment_damage_report.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/83391695042.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/bridgeport_series_2_milling_machine_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/how_to_size_a_heat_exchanger.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/248018823.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/the_expanse_season_6_air_date.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_off0000f184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF184 5084 bytes
SHA-256: e4c44e312d17f2c24e8cf2771db08d9cd24aa7642291454967108c3e2527b8c7
font_01_sfnt_off000102cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CB 10356 bytes
SHA-256: 92b1769565b344d000bf100dacd4ecacef056f9f7980a95b66cb59367499ea4e

Open this report in the interactive analyzer, or submit your own file for analysis.