Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b8333e2afe2780…

MALICIOUS

PDF

73.9 KB Created: 2021-04-05 02:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: eddaa0f769fdf2cf853e40ae4f5ca820 SHA-1: e0f16483beecd9ac6af3b6f312a4f64e9b02e9e8 SHA-256: 03b8333e2afe27802bdd991bd5587152b3d22de6b3ee0b763daab0b3d3c8bc79
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=thomas+calculus+solution+manual+download PDF link annotation
    • http://tugrull.com/onn_wireless_mouse_manual5wagw.pdfIn PDF document text
    • http://amsidisi.xyz/30895840974sc6cd.pdfIn PDF document text
    • http://my-favshop.online/christmas_film_guide_2018_uk9twlk.pdfIn PDF document text
    • http://usechambre.xyz/estructura_ideolgica_de_un_plan_de_negociosn75dk.pdfIn PDF document text
    • https://cdn.sqhk.co/sisowufabo/XKThgkL/13403243252.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/jhvVjh7/lukaxorajawoxezowe.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/nwEhRha/stackable_diamond_rings_rose_gold.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/gdjhkgj/hack_robot_fighting_2_minibots_3d.pdfIn PDF document text
    • http://3gusevshop.website/futurama_worlds_of_tomorrow_guide35q5k.pdfIn PDF document text
    • http://konsalting.info/brother_lock_1034d_spare_partsdj9p5.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/hd6giRm/80231991247.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed8d846-a9fe-44e0-9c57-7c3fe4eccc8e/what_is_student_engagement_in_learning.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/mevefopew.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/grer_son_stress_au_travail_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/bomberman_fantasy_race_ps1.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/87794951926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a95a2da-440e-4f09-920f-c4b4452b1dce/boxuxerozojoborus.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/teoria_de_gardner_inteligencias_multiples_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504ddece-6137-4a6f-a799-e878b760df4b/rowe_ami_jukebox_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/excel_bedingte_formatierung_mehr_als_3_farben.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_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 5124 bytes
SHA-256: 32756f6883d66d20088c72a1381d476197d7e5e2e332b3c7e3a70324d0423931
font_01_sfnt_off0000f58d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58D 10216 bytes
SHA-256: 0c8c7d48023cd8f0433b97ad52e0f3e3bbf1b58ca53542d83b71fa014fee8d3f

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