Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0330f1c89a2926…

MALICIOUS

PDF

74.5 KB Created: 2021-02-22 20:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dd77209cedaca40152019c8bbd97c94b SHA-1: d0bf643f8c4c18433816380214ad2838ff3043ab SHA-256: 2b0330f1c89a292637d936cd20e20d5c36ee1fe8c9f72de67ef30bb66032f19f
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to product information, aligning with phishing tactics.

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=rinnai+ruc98ip+ultra PDF link annotation
    • http://joxesozijemago.iblogger.org/eaton_easy512-_ac-_rc.pdfIn PDF document text
    • http://mnatural.space/ibm_infoprint_1532_universal_driverailr8.pdfIn PDF document text
    • https://cdn.sqhk.co/bidusowo/i4gd2jb/prison_planet_romance_books.pdfIn PDF document text
    • http://tameenegypt.com/68970242662dw2au.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/tubukeganuji/aws_availability_zones_cloudformation.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/kansai_nerolac_paints_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/59714170712.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/domupafufus.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/washington_state_basketball_record_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/12th_biology_books.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/gifizubunop.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/71747412784.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/b_e_d_form_online_2018.pdfIn PDF document text
    • http://fowasabitafal.epizy.com/10316469902.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/arkansas_state_university_salary_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/14012443317.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/810137700.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_off0000e4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BF 5104 bytes
SHA-256: c31174c2e70b724cec6ef3b5ec7d0051cf8eac0b21c82291714a5574e0f6ff0b
font_01_sfnt_off0000f62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62D 11640 bytes
SHA-256: 10246b33f02eb65aa89685232d3de5b32ee6aaba6d24c33bc1312b10684fea21

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