Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b3395145a3ca9e…

MALICIOUS

PDF

628.7 KB Created: 2021-05-28 03:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4e61b0834a7937a60137d02beec1c337 SHA-1: 9b245b19008957049cde6ff0834259d9dcf72cef SHA-256: a0b3395145a3ca9e0808fadecea625bf2a1f105c0ae023d9f5f9c5f70b3741fa
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 0.6759

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://kuzutuzo.ru/strik?utm_term=libro+de+matematicas+2+de+secundaria+contestado+pdf+2019+conecta+mas PDF link annotation
    • https://sukewemuzi.weebly.com/uploads/1/3/4/6/134668821/parux-xebivakemenovoj-kazisivaneni.pdfIn PDF document text
    • https://penabapemuzoji.weebly.com/uploads/1/3/1/4/131453208/9168313.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/a498d95716.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4374838/normal_60afef14d9777.pdfIn PDF document text
    • https://xegokefizu.weebly.com/uploads/1/3/5/3/135323464/7a63df2.pdfIn PDF document text
    • https://zotekuruwufuk.weebly.com/uploads/1/3/4/1/134108654/6fd46c0.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/7452463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_601e3b15613f3.pdfIn PDF document text
    • https://bosogafowobalo.weebly.com/uploads/1/3/4/6/134614472/0bdc1a6bcfe.pdfIn PDF document text
    • https://bixedonaxube.weebly.com/uploads/1/3/4/6/134619794/9350555.pdfIn PDF document text
    • https://gopasijokalurat.weebly.com/uploads/1/3/5/3/135399025/gugijibotuka.pdfIn PDF document text
    • https://popoxalisasuper.weebly.com/uploads/1/3/0/7/130775362/temeg.pdfIn PDF document text
    • https://voxisazemiruza.weebly.com/uploads/1/3/1/8/131871554/73e0c3b25905a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_605d7030eee97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413573/normal_604de8aa3fa56.pdfIn PDF document text
    • https://tedifonag.weebly.com/uploads/1/3/1/1/131164063/wosipubadezadadisese.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/c124f27f-d688-462d-b23a-bc3ae8a9bd19/pabagixakigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d082cf-9b85-413a-a91e-f975655017d3/butterball_xl_electric_turkey_fryer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad806b3-827b-4293-b601-179454da6d77/what_is_science__technology_25_book_box_set.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf3e670-10b3-4db8-95c9-c9a01d2ddfe2/the_secret_river_massacre_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03c77fa-9654-4e37-bf5f-92b3805eab97/command_point_reroll_age_of_sigmar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f513b9-7aed-420c-8478-fe52b5b6daad/samsung_ue50ru7410_50_inch_4k_ultra_hd_smart_tv_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6543d68a-3890-4ca8-b25b-49ed712c2a67/all_you_need_is_kill_script.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_off00097836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97836 5832 bytes
SHA-256: 2bd043b2971169098c786ad527f7ac66528ec2827244deec2afab26f10ebc56d
font_01_sfnt_off00098bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BFD 16196 bytes
SHA-256: f03e85863c1fba040193353b704787f227fc77afddca451fdf4b9910ff2fa6a0

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