Malicious PDF — malware analysis report

Static analysis result for SHA-256 028bef734aa70870…

MALICIOUS

PDF

81.4 KB Created: 2021-02-20 01:59:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e277e5d349a91f37435a35de063059c0 SHA-1: f52533ec115f350e1973eecd690c40a6f2756803 SHA-256: 028bef734aa70870cd0e5ec409839eae4532a1ba5f8e537f6567970416c558e8
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 0.9998

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://leonvi.ru/strik?utm_term=how+to+make+a+chinese+lantern+that+flies PDF link annotation
    • http://raisinshub.pro/labikitalagamab3a9t.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/jXbgijh/vimiwafunag.pdfIn PDF document text
    • http://beramomu.22web.org/58876918723.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/M2MfYge/dj_sounds_effects_horn.pdfIn PDF document text
    • http://wavarev.22web.org/negidetukuxeregebut.pdfIn PDF document text
    • http://tujofifebituxuv.22web.org/bunny_wallpaper_android_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/hIZhfjh/las_vegas_softball_tournament_november_2019.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/sisaxu/33893119364.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/67647378131.pdfIn PDF document text
    • http://fofifalog.rf.gd/droidadmin_for_android_box.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/amityville_2017_sub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/jagugukirafef.pdfIn PDF document text
    • http://vobisobopimab.epizy.com/black_and_decker_20_volt_lithium_circular_saw.pdfIn PDF document text
    • http://xewojof.rf.gd/sinasenutiviju.pdfIn PDF document text
    • http://jiforexawa.rf.gd/abrahaminte_santhathikal_song_ringtone.pdfIn PDF document text
    • http://madanekobovuge.epizy.com/kiradop.pdfIn PDF document text
    • http://wupafar.rf.gd/surface_area_of_prisms_worksheet_7th_grade.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_off00010197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10197 5240 bytes
SHA-256: 7e3c93f2c09a9a67f9e3401e2d2ec6222373df38644c6078d3e95249ca64c0da
font_01_sfnt_off00011346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11346 10864 bytes
SHA-256: 1dd0b47bd1a74b98d3627ad7b21a2d23c1644d36ba6aa67e67d3d540798c530a

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