Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe23a4dd956b127…

MALICIOUS

PDF

74.0 KB Created: 2021-03-22 06:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8cbdea2f094701ea1a00aaae409eb0fe SHA-1: 3131316393fc45f340f6e74a2af659c92d7d486b SHA-256: 9fe23a4dd956b12789c264e83e3960e5fd9c6f09cbae0fcc8c554c1abb70a0a0
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/award?keyword=bsc+1st+year+inorganic+chemistry+book+pdf PDF link annotation
    • http://salizib.iblogger.org/coach_corey_wayne_book_amazon.pdfIn PDF document text
    • http://tamowigaxijatot.66ghz.com/menanagogoziretajojovite.pdfIn PDF document text
    • http://losqutoq.online/daily_grammar_practice_high_schoolzw1hr.pdfIn PDF document text
    • http://nivunexodu.22web.org/how_to_conduct_stock_market_research.pdfIn PDF document text
    • http://jiviwizun.iblogger.org/vorogapifedababilu.pdfIn PDF document text
    • http://lasns.fun/22437376877bcbbu.pdfIn PDF document text
    • http://susarivusu.22web.org/computer_stuff_word_search_answers.pdfIn PDF document text
    • http://lnstagramoriginal.com/749777997503kfkd.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/kovezux/sotetafo.pdfIn PDF document text
    • http://gelulunex.epizy.com/english_speaking_guide_rome.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/nixudetimaxesafake.pdfIn PDF document text
    • http://puwojewemuxa.epizy.com/defivowozixozegenek.pdfIn PDF document text
    • http://fuxufotab.epizy.com/newspaper_report_example_ks2.pdfIn PDF document text
    • http://gazezubutajon.rf.gd/free_advanced_christmas_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/75586653893.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/earned_income_credit_worksheet_2017.pdfIn PDF document text
    • http://wajodojizofe.epizy.com/womatodototasomutunureniv.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/cuddeback_capture_ir_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/81507729359.pdfIn PDF document text
    • http://lirurija.rf.gd/cs_lewis_quotes_inspirational.pdfIn PDF document text
    • http://gijabakupukuj.rf.gd/trainspotting_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/byju_s_app_for_pc_windows_7.pdfIn PDF document text
    • http://rapuzivawa.epizy.com/ethiopian_amharic_movies.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98D 5944 bytes
SHA-256: abfc3882ff59085faf6b2fc7a48e935f73c9d017d0c527b2fdda3a62e6ec5903
font_01_sfnt_off0000edaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAA 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off0000f63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63A 10336 bytes
SHA-256: d85a13ab0fe413d5824549c4bcdf4a3e9a420821866a52f5be11cc9357f145b7