Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93ba39d8caf3a4e…

MALICIOUS

PDF

67.7 KB Created: 2021-03-31 01:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c50f19b84b2e1d5e9774ca2b4576ec1 SHA-1: 4999643eaece851b1935bf404f65bf8d1cb49450 SHA-256: e93ba39d8caf3a4ec06e0edfe1919ca1560479c6233d834deefebb53f615eab1
96 Risk Score

Malware Insights

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

The file is a PDF with a high ML classification and ClamAV detection, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of external URIs suggests a phishing or malware distribution attempt.

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://resalured.ru/123?utm_term=nice+hypertension+guidelines+2017
    • http://lovupijuti.getenjoyment.net/sistema_binario_octal_y_hexadecimal.pdf
    • http://jaraxusej.iblogger.org/ruwunotilumoraromejef.pdf
    • http://lorezagosuvese.scienceontheweb.net/analytical_method_validation_ich_guidelines.pdf
    • http://sexefowox.22web.org/d_d_adventurers_league_log_sheet.pdf
    • http://winefesa.22web.org/makkar_ielts_speaking_january_2020.pdf
    • http://xidemapewa.22web.org/bromatologa_composicin_y_propiedades_de_los_alimentos_gratis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pafexegud/sample_forensic_audit_report.pdf
    • http://sujetokotew.rf.gd/67243189787.pdf
    • https://s3.amazonaws.com/kofabube/operation_2019_movie_utorrent.pdf
    • https://s3.amazonaws.com/bededuxotulapil/interest_groups_icivics_answers_the_potato_problem.pdf
    • http://lapizepo.rf.gd/28734550085.pdf
    • http://valupakukav.myartsonline.com/berenstain_bears_books_read_aloud.pdf
    • https://s3.amazonaws.com/vasofirida/99809558484.pdf
    • https://s3.amazonaws.com/fevobelijogal/tolotunolofigekuxufijanog.pdf
    • https://s3.amazonaws.com/xakapudakadu/matlab_scatter_plot_colorbar.pdf
    • https://s3.amazonaws.com/sefepugolupalax/pdf_books_free_civil_engineering.pdf
    • https://s3.amazonaws.com/xijilesuzuxo/bifofokekejifowowal.pdf
    • https://s3.amazonaws.com/vufupu/how_to_connect_proform_to_ifit.pdf
    • https://s3.amazonaws.com/xukonakefules/41487185915.pdf
    • http://gipomafusabakix.rf.gd/meses_do_ano_em_ingles.pdf
    • 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_off0000cc9a.bin
add428696ca9e6a0703d8dce389f012ded5a50c3d661f1e1e62560e62013022c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC9A 5600 bytes
font_01_sfnt_off0000dfc5.bin
052ed41be8a4bb0ccfe60fd6461c4d69d74e47641f6b2d038fb4aae1b16f680d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 9996 bytes

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