Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c16a31dc90b945…

MALICIOUS

PDF

77.6 KB Created: 2021-03-31 15:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e866d55fd8263db3111703d3f35de660 SHA-1: 4fe592c3cee7dc9a3a41b05049d6993239534b4d SHA-256: 25c16a31dc90b945efae3a8ffcc966d2d8e5c716d02ea5560215ad4810ef71e1
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to contain metadata related to a tablet review, suggesting a lure to entice users to click the malicious link.

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://seumenha.ru/strik?utm_term=rca+android+tablet+rct6973w43+review PDF link annotation
    • http://tesekal.mygamesonline.org/48519265279.pdfIn PDF document text
    • http://velavedi.iblogger.org/grammar_worksheet_year_2.pdfIn PDF document text
    • https://cdn.sqhk.co/pexufenek/jjckhf1/inspector_general_report_2019_release_date.pdfIn PDF document text
    • http://ruwazumusef.scienceontheweb.net/19660124681.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/wgfchjH/dragon_buster_mame_rom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riveminigokoxa.myartsonline.com/operasi_pada_bilangan_real.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/teko_classes_bansal_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/49440015763.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/26826540603.pdfIn PDF document text
    • http://bijolijufapida.rf.gd/pdf_akreditasi_rumah_sakit.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/tokatupusodijij.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/zezuluxamiderobozalifej.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/97432194289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b014a795-1a6b-404d-b775-d9171592f308/dutilazononeset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea06acaa-34e7-4abc-9f44-e89303e14db7/what_is_the_best_personal_laser_printer.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/pozaginebijuwut.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/fudekuxipa.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/comparison_table_design_template.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_off0000ef85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 5696 bytes
SHA-256: 65e6b938504f63c839661400ae821062bc1f55ac6ff78857a2434a3d52b713b7
font_01_sfnt_off00010319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10319 11176 bytes
SHA-256: 0b55029dbba42a090b4703ae1fa639bfffd68e105075850e2d804408a85c1b5b

Open this report in the interactive analyzer, or submit your own file for analysis.