Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4040b26ecf7d13…

MALICIOUS

PDF

141.6 KB Created: 2021-03-23 09:28:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aec824acf2226b0be4d313114cfca2cb SHA-1: 59e622852ecbcdd6017ec5fc5bce202c44a1dd68 SHA-256: ea4040b26ecf7d1385a7f794afe471ac3d7ac9783fa6a03aaa9e1b8d003eeab8
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 0.9987

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=visual+studio+2015+c%2523+windows+forms+tutorial PDF link annotation
    • http://pasoponetev.22web.org/what_is_the_keyboard_shortcut_for_split_screen_on_a_chromebook.pdfIn PDF document text
    • https://cdn.sqhk.co/xarobumevux/chjnjg6/50401019866.pdfIn PDF document text
    • http://zodimasar.mypressonline.com/sezabuvejivemunajukowi.pdfIn PDF document text
    • http://lozuzaragujeb.mypressonline.com/12th_science_biology_book_in_gujarati_sem_4_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/ifii819/2_player_car_racing_games_ps4.pdfIn PDF document text
    • http://dulexip.22web.org/gosepogurozamosaxatan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/metubevozisul/baxot.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/iron_carbon_equilibrium_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/pdf_architect_4_creator_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/angaray_full_novel.pdfIn PDF document text
    • http://kujafugakare.epizy.com/gimp_tutorial_layers_youtube.pdfIn PDF document text
    • http://mezotavexojo.rf.gd/abstraction_in_programming.pdfIn PDF document text
    • http://jigotubefaso.rf.gd/hbs_test_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/51123387449.pdfIn PDF document text
    • http://vevemelimo.epizy.com/vugamajijivuxoda.pdfIn PDF document text
    • http://kiburomuwilun.epizy.com/george_foreman_15_serving_indoor_outdoor_grill_w_cover__recipes.pdfIn PDF document text
    • http://wazikaje.rf.gd/powerpoint_chart_templates.pdfIn PDF document text
    • http://bejuwenaja.epizy.com/42147024564.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/candle_wick_guide_uk.pdfIn PDF document text
    • http://bewegaxijev.rf.gd/betavu.pdfIn PDF document text
    • http://pisumapopub.rf.gd/how_to_report_yeast_cells_in_urine.pdfIn PDF document text
    • http://dowinoxerirud.epizy.com/pekapevekuwir.pdfIn PDF document text
    • http://wikafivivuma.epizy.com/rofajitum.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_off0001dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DEE2 4912 bytes
SHA-256: 3925e2ab45a08fb4e5a39888ab7f6fbc1e9496d68f04f9873bbe55c39613af7e
font_01_sfnt_off0001ef9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF9E 12112 bytes
SHA-256: 66f48ffdaef41d29adaf33a96766b9ac7664d18339e29dbb530090c4c154b449
font_02_sfnt_off000218cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x218CB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3