Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc3d13e29a78d08…

MALICIOUS

PDF

69.5 KB Created: 2021-02-02 15:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f11ccfb0b2e6ba7203dd68bfd8388d0d SHA-1: f91a0053e48866e87ffcf30b26739791d4b2b6f1 SHA-256: 8cc3d13e29a78d08a4056415ad0360000cabe1ae5d9e4abee63f796aa1497da2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting it is a lure for 'Arcady petrov books pdf'. The embedded URI points to a suspicious domain, likely serving as a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/aws?utm_term=arcady+petrov+books+pdf PDF link annotation
    • https://cdn.sqhk.co/japokaxe/jbid5jb/ikea_hemnes_dresser_with_mirror_dimensions.pdfIn PDF document text
    • http://wonnaturila.space/numpy_in_python_tutorial4405d.pdfIn PDF document text
    • http://talkme-news.info/fodefewifenowioab7k.pdfIn PDF document text
    • http://tiktokhd.design/spartacus_3._sezon_10._bC3B6lC3BCm_tC3BCrkC3A7e_hd_full_izlepel0j.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/Khcgdjg/power_bi_report_tooltip_embedded.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/jgJhahe/83285140565.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/N4gihjt/dread_necromancer_5e_class.pdfIn PDF document text
    • http://vquest.website/chess_ratings_fide_sri_lanka3g01r.pdfIn PDF document text
    • http://tersq.fun/saxijila03d2c.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/fofeguj/grr_anova_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/best_buy_portable_charger_android.pdfIn PDF document text
    • http://duxurulokij.epizy.com/2394365773.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/reliable_websites_for_medical_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/arihant_chapterwise_accountancy_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/stainless_steel_gauge_chart.pdfIn PDF document text
    • http://wikidupuzok.epizy.com/44889130010.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/tutorialspoint_boolean_algebra.pdfIn PDF document text
    • http://medojowibapij.epizy.com/multiplying_and_dividing_algebraic_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/android_smartwatch_with_ecg.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_off0000d169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 5472 bytes
SHA-256: 04be9ec956e902aabd43edf8d06800c70641b62c0aa626202bb3f1d9bc0d45ff
font_01_sfnt_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 11064 bytes
SHA-256: 67fe1d0a3a903d346005f3627db27e7318f5e535c4a6bb08abe110e91aea4fce

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