Malicious PDF — malware analysis report

Static analysis result for SHA-256 042d5b3487d22e93…

MALICIOUS

PDF

76.1 KB Created: 2021-03-19 18:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dc8cae61f8530c13bd23bd296fcdbbe9 SHA-1: b1da2a4f969d49dd0ebcd586ee724869b51d1ef2 SHA-256: 042d5b3487d22e936a8215425a59be709a70e70f435f33fb82b8434dbe87e7a1
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 0.9993

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://jottigo.ru/wix?keyword=necchi+sewing+machine+manual+535fa PDF link annotation
    • http://kajipim.mypressonline.com/malaxix.pdfIn PDF document text
    • http://skidki-day.site/89688432588juhu7.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/risitoxe.pdfIn PDF document text
    • http://dasezin.getenjoyment.net/xideke.pdfIn PDF document text
    • http://drilltech.info/save_the_fish_app_store23h8w.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/59772637486.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/3017250128.pdfIn PDF document text
    • http://avto-document.site/blood_pressure_drugs_that_cause_constipationwnuao.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/gurupixabogivaz/pazizaragus.pdfIn PDF document text
    • http://fesizufutubejug.epizy.com/the_economist_9_june_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/austria_schengen_visa_application_form_dubai.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/beauty_cam_for_windows_7.pdfIn PDF document text
    • http://weponigonimogo.myartsonline.com/fepogajotajezegaxuvuped.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/gw2_gesandten_rstung_2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/guidewire_policy_center_testing_jobs.pdfIn PDF document text
    • http://xarajadumep.epizy.com/cessna_421_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/bsc_third_year_chemistry_book.pdfIn PDF document text
    • http://labujuf.epizy.com/carta_descriptiva_definicion.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/metro_2033_book_audio_english.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/corrugated_metal_roofing_installation_guide.pdfIn PDF document text
    • http://xomutojekes.myartsonline.com/english_speaking_topics_for_class_6.pdfIn PDF document text
    • http://zonurupadul.atwebpages.com/upkar_ctet_book_download.pdfIn PDF document text
    • http://tevaluzax.atwebpages.com/halo_ghosts_of_onyx_free.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_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 5548 bytes
SHA-256: 1fabe705f1bbabe6430876c4caca727914cdd14be5289ea55347ab9ea8c8f678
font_01_sfnt_off0000fd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD55 10536 bytes
SHA-256: a97f6ef8babf170a17b1daaad0df5fe314c280b25079715bec4813460bc93231

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