Malicious PDF — malware analysis report

Static analysis result for SHA-256 457628896e6eb693…

MALICIOUS

PDF

75.6 KB Created: 2021-04-27 15:59:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 82866bfb9d6f71bf8fc7d8aeff133468 SHA-1: 48da2fd31d36807476f5c308a23c7ba954fe409f SHA-256: 457628896e6eb6933da13abdf26414bf5fcb6cc1956e92b1a331fbd4639a54fd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=how+to+change+blade+on+circular+saw+black+and+decker PDF link annotation
    • http://digitalmicroteter.xyz/taboberufejizifizereleja5o0ns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426699/normal_604a4457490ce.pdfIn PDF document text
    • http://hot-money.fun/como_sacar_dinheiro_do_carto_de_credito_nubank0vupt.pdfIn PDF document text
    • http://xuxugagutosi.iblogger.org/63305757861.pdfIn PDF document text
    • http://pearhaidhr.fun/dune_2000_miniseries_trailer7z461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489422/normal_60618aea2d9a7.pdfIn PDF document text
    • http://nefuzixitelu.iblogger.org/aashiqui_2_hd_video_song_1080p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446286/normal_603a458d82b28.pdfIn PDF document text
    • http://changepass.online/296207057220h80g.pdfIn PDF document text
    • http://bluetea.space/commercial_ice_cream_machine_for_sale_in_south_africa9t517.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/daraniwekamidir/blokada_dns_apkpure.pdfIn PDF document text
    • http://nenedabex.rf.gd/meant_to_be_video_bebe_rexha.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/xofosutipafawukubewa.pdfIn PDF document text
    • http://temekem.epizy.com/lotaroxose.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/gender_is_burning_questions_of_appropriation_and_subversion.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/bhimavaram_bullodu_movie_ringtones.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/zemafomopasud.pdfIn PDF document text
    • http://dadixuxizu.rf.gd/maynard_ferguson_birdland_sheet_music.pdfIn PDF document text
    • http://jeputujakajaj.epizy.com/argos_pet_insurance_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/how_to_calculate_z_table_in_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/ritaroruxowawodosaxareta.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/excel_vba_cells._replace_replaceformat.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_off0000e97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97C 5456 bytes
SHA-256: 461b4bb3c94948604f01f746779d10cc750d58066438c78390f380ad26100365
font_01_sfnt_off0000fc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC11 10760 bytes
SHA-256: a101a2a610095e892e2da2ab1149ea10cf8e3e3be80db3891dca295faf6656bb

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