Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5afe3470c12545…

MALICIOUS

PDF

88.8 KB Created: 2021-03-19 06:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1d93ead68d3cc5cf2f638c7383c5e64e SHA-1: 43889a903b376a65499e70ae567ab1d2ebe4ffed SHA-256: bf5afe3470c1254529d15813c33734310251c027fd75a79ce7bc97918995c32f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text related to 'Self guided walking tours sydney australia', likely a lure to encourage users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/123?utm_term=self+guided+walking+tours+sydney+australia PDF link annotation
    • http://znalomstvavip.site/2019_standard_catalog_of_world_coins_2001-date_13th_editionmqrim.pdfIn PDF document text
    • http://mpvideo.org/352518158737oiya.pdfIn PDF document text
    • https://cdn.sqhk.co/fusulelibev/3xcgfgc/granny_chapter_2_game_download_for_windows_10.pdfIn PDF document text
    • http://wei-nmvc.com/dirk_gentlys_holistic_detective_agency_tv_tropesorkhi.pdfIn PDF document text
    • https://cdn.sqhk.co/vivejegefonu/nmp2AV4/critical_criminology_theory.pdfIn PDF document text
    • http://marketop.club/a_discovery_of_witches_season_1_recapc1xpa.pdfIn PDF document text
    • http://vivadoctor.ru/xanifuvisanubunamu9jdfg.pdfIn PDF document text
    • http://piredvizhnik.com/28252638422gp7i6.pdfIn PDF document text
    • http://gadosamu.iblogger.org/71600551450.pdfIn PDF document text
    • http://usejus.pro/simplifying_radicals_worksheet_word_documentbiz72.pdfIn PDF document text
    • https://cdn.sqhk.co/vikojovowoso/jgjjdLs/steven_universe_amino.pdfIn PDF document text
    • http://istlan.space/buwuvitesaxegezukijege2m74a.pdfIn PDF document text
    • http://checkmycredit.info/adobe_media_encoder_cc_2014_crackdm0lw.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/nademopor/32899100111.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/70676035451.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/task_priority_matrix_excel_template.pdfIn PDF document text
    • http://figejadinopi.rf.gd/billian_billian_akhan_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/raginukawamo.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/lost_boy_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/43262366976.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/8357146845.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/24668634320.pdfIn PDF document text
    • http://jolatuziguxobe.rf.gd/persona_5_yusuke_social_link_guide.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_off00011d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6E 5436 bytes
SHA-256: eedaf69701136ddf7c5befd62576ecfdf60b7e757cff3f330e5e3e27bb908ac6
font_01_sfnt_off00013018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13018 11132 bytes
SHA-256: 5215bb82cfb6ad9415d62f5d84bc7aff74a8220e7b4d99d58cdea863a518533e

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