Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa9014ad1d767e6…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 17:15:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: aab21963937c640ae4ffc052f1f8dc76 SHA-1: e05115dd92839add90c24070a59b7cd4c3a8a7aa SHA-256: 9aa9014ad1d767e6539c0c9d6f89645a5367ef3c16140cee2ea44edb2823c439
136 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating a payment redirection lure, suggesting it aims to trick users into changing payment details or making fraudulent transactions. The embedded URL `https://jacksth.ru/wix?keyword=iphone+6+keyboard+apk` further supports this by pointing to a potential application download, likely malicious. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://jacksth.ru/wix?keyword=iphone+6+keyboard+apk PDF link annotation
    • https://cdn.sqhk.co/datawafag/cF2gjDP/michaels_cake_decorating_class_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5fe035ae5b181.pdfIn PDF document text
    • http://chambreapp.xyz/91839043266scld7.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/dhgKFzW/silver_dollar_city_campground_branson_missouri.pdfIn PDF document text
    • http://indital.space/49694564165g851l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413980/normal_5ff8c139cdc3e.pdfIn PDF document text
    • http://jsexj.fun/xofoma1glu0.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/PU2jeVn/jifitumerifekovozavalegi.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/mesixadelomomo/how_alcohol_affects_the_body.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/free_quadratic_equation_worksheets_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/13360226648.pdfIn PDF document text
    • http://nitusul.rf.gd/sqlite_insert_android_datetime.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/12481372886.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/streaming_music_platforms.pdfIn PDF document text
    • http://getorisatenazu.rf.gd/zubuvora.pdfIn PDF document text
    • http://tatifamajerub.epizy.com/geeksforgeeks_gate_2018_answer_key.pdfIn PDF document text
    • http://pumusejori.epizy.com/25167758199.pdfIn PDF document text
    • http://kixulal.rf.gd/squared_and_cubed_numbers_year_5_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/pneumonia_antibiotic_guidelines.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_off0000e1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F5 5232 bytes
SHA-256: 9b4f9d75b0adb95b3741eacc3956042ecb1413e1ccb743b72a392b4bcbee8c3a
font_01_sfnt_off0000f3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BB 10456 bytes
SHA-256: 39b83c21f1c7c2413a821c229b3fec7dcba921c2b7e9fe31c92697b6ac4806f8

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