Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a4917439b1ee199…

MALICIOUS

PDF

75.1 KB Created: 2021-03-16 23:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd1480baf258e9b7484c2197497122d7 SHA-1: 91d058353a5a59eea8eab57fcc4f0eefce5de6f2 SHA-256: 5a4917439b1ee1995c4d8a08ba103aa4cb19db2eebe3bb362e667dae06722734
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. The embedded URL points to a download for 'equalizer apk full version', suggesting a lure for potentially unwanted or malicious software. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of 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://botokaw.ru/wix?keyword=equalizer+apk+full+version
    • https://cdn.sqhk.co/wekaradukuve/hh7rjfK/prehistoria_definicion_en_ingles.pdf
    • https://kanodofeju.weebly.com/uploads/1/3/5/3/135325650/sovob_kafisure.pdf
    • http://doxugivo.22web.org/zegiziferut.pdf
    • https://zigudufojivop.weebly.com/uploads/1/3/4/7/134718002/5539020.pdf
    • https://fakazurirogedim.weebly.com/uploads/1/3/4/7/134743668/gajixomuzudegugip.pdf
    • http://zonafuluza.iblogger.org/report_writing_lesson_plans_year_3.pdf
    • http://tamaxenipukeg.iblogger.org/mastering_bitcoin_italiano.pdf
    • https://cdn.sqhk.co/gobajejuz/by5kgjQ/59167224696.pdf
    • https://cdn.sqhk.co/dewufidabo/igigiiy/fopizoninometume.pdf
    • https://cdn.sqhk.co/rekosiseweno/gghbPuM/skipping_rope_training_plan.pdf
    • https://vitasexabu.weebly.com/uploads/1/3/0/8/130813400/b492938a0c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://945c5b1a-9feb-4a08-b72d-c905ca1b1520.filesusr.com/ugd/27135d_b2526913bcd34f46b224dc137409a80e.pdf?index=true
    • http://duwimufowewis.epizy.com/descargar_my_talking_tom_apk_uptodown.pdf
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_0dba565961b24aa18c847dffd16f17a8.pdf?index=true
    • http://besosive.epizy.com/relaciones_diagrama_de_clases.pdf
    • http://pasivete.epizy.com/10389826439.pdf
    • http://gevalej.epizy.com/best_telugu_movies_2019.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_off0000e6b8.bin
7320e6a63009861075ef6b3e15d0835e6c0a2a9f52245778ad097e1b1dbd8565
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B8 5152 bytes
font_01_sfnt_off0000f870.bin
6845f50ba4b22cbb3a973182df140940e2389eea6b7c17d2fecdae37360a5ca8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF870 11452 bytes