Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b9e8a7ead60c5c…

MALICIOUS

PDF

104.3 KB Created: 2021-04-02 11:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 58df73ad2554acca94d8bd2ebd455dbe SHA-1: 104e8c6d88a13a9dc15687c00aa4f7fa632b3934 SHA-256: b8b9e8a7ead60c5c0a131090fef2f4d4075688a6c99878ee0d855a3d6633a683
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://jumiwimov.ru/award?keyword=psychopathologie+de+l+anorexie+mentale+pdf PDF link annotation
    • https://cdn.sqhk.co/welosezu/abYhadw/talking_gina_the_giraffe_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/0f8haji/furious_road_2018_cast.pdfIn PDF document text
    • http://ziwavabewite.66ghz.com/33787281601.pdfIn PDF document text
    • http://podjem2.club/the_tiger_rising_book_summary7yv4c.pdfIn PDF document text
    • http://carbackseat.site/10075909875wrbjr.pdfIn PDF document text
    • http://tipijijajofupi.sportsontheweb.net/virtual_assistant_proposal.pdfIn PDF document text
    • https://cdn.sqhk.co/gefokinoxi/e0MQnjg/underhanded_sales_tactics.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuxona/gdCDqBk/indemnity_disclaimer_template_south_africa.pdfIn PDF document text
    • https://cdn.sqhk.co/ramowejub/WvhbEih/70048333198.pdfIn PDF document text
    • http://trenketo.buzz/4843044032rihlz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://badamowafe.onlinewebshop.net/sefegixafunobuxigatusab.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/deduvufowilex.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/9th_class_pak_study_book_in_urdu_chapter_3.pdfIn PDF document text
    • http://vuxubeso.rf.gd/kulfi_kumar_bajewala_betiyaan_song.pdfIn PDF document text
    • http://mujusitajal.rf.gd/cohesive_devices_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/internet_manager_full.pdfIn PDF document text
    • http://lugimeviguv.myartsonline.com/67201411834.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/how_to_make_watercolor_flowers_in_procreate.pdfIn PDF document text
    • http://juwebud.epizy.com/princeton_review_mcat_practice_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/rafifamodiwiraworopo.pdfIn PDF document text
    • http://kegigija.atwebpages.com/mebavapupikunudefuvoru.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/how_much_does_a_forklift_technician_make.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_off0001508f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1508F 5740 bytes
SHA-256: 579d3c83cb47b23d0d3a7aabf9a146a6c63d9d7bb39b83987d1fe3a5ce4b1fe0
font_01_sfnt_off000163fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163FA 15004 bytes
SHA-256: 4c97e06d0dfed7baa5476dd131470beb7a9d5961fb47ba1d368ff8a3488531f6

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