Malicious PDF — malware analysis report

Static analysis result for SHA-256 21f6705922f7b5be…

MALICIOUS

PDF

78.6 KB Created: 2021-03-18 06:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1507e7127f449ea550c909ba532ecb00 SHA-1: 119f280f29ddadecaa1426cd905382f6953c253c SHA-256: 21f6705922f7b5be98d6beb6f3016cf8214cd29188863ce225d6dc650013656c
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malicious content. The document body, though heavily obfuscated, suggests a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/strik?utm_term=que+clase+de+razas+humanas+hay
    • http://gisoboxizaza.mygamesonline.org/benotojawonefusu.pdf
    • http://sowopezamiw.medianewsonline.com/jands_vista_s3.pdf
    • http://xefopuro.mypressonline.com/xisezinudufibometugixak.pdf
    • https://static.s123-cdn-static.com/uploads/4423780/normal_5feb36fbebb16.pdf
    • https://static.s123-cdn-static.com/uploads/4405899/normal_60010c435d5ff.pdf
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fe52ca12304f.pdf
    • http://tuzogat.sportsontheweb.net/word_document_to_converter_download_free_software.pdf
    • http://kevufeduwatawos.mypressonline.com/alternating_current_notes_for_class_12.pdf
    • http://wijofotezopadik.medianewsonline.com/programmable_logic_controllers_5th_edition_chapter_8_answers.pdf
    • http://niwagiw.22web.org/whatsapp_status_saver_for_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xotopusedewix.myartsonline.com/nesivibuladedefodonexu.pdf
    • https://s3.amazonaws.com/zagapaxa/38004394078.pdf
    • https://s3.amazonaws.com/xepululejiwof/bumemetixizenozexuji.pdf
    • http://pebomotixot.myartsonline.com/xubenuposipa.pdf
    • https://s3.amazonaws.com/lomuper/vetubudaxut.pdf
    • http://povodakav.myartsonline.com/retinoids_for_acne.pdf
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_e504acd728a54369b79c6bf1d9569713.pdf?index=true
    • http://surafupomef.epizy.com/la_crosse_bc-700_technoline.pdf
    • http://zivuneko.epizy.com/1792072263.pdf
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_29bf215bd85f4e0c99c1a29ee7e09d27.pdf?index=true
    • https://s3.amazonaws.com/folexapurilowe/how_to_transfer_call_on_nortel_phone.pdf
    • https://6c49ff76-e13b-46da-8354-2e633d56f736.filesusr.com/ugd/211c2d_389381164b25479fa43124f9728876c8.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4ac.bin
4fe9c524005d4fa5fb75634df347f102b11adf4e5a86f4ab546f288b03f63a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AC 5392 bytes
font_01_sfnt_off000106e5.bin
de0c5b8f0d0be3a5044e0e52878ec4942d6d12a82514a64f091e4af5d4f86c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106E5 11336 bytes

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