Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e4bada98433bd7…

MALICIOUS

PDF

75.6 KB Created: 2021-03-23 12:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8af7e67a8aef45d143f0df018655b5c7 SHA-1: 245804d5ef0a37a9f2e975a638097122f225a0b9 SHA-256: 39e4bada98433bd7cf6548f8545e991c4afd3bdc8608901fd138bc36a89e5875
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=carrier+weathermaker+9200+service+manual PDF link annotation
    • http://poxamudowodet.22web.org/divafuneta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_603e77997a529.pdfIn PDF document text
    • http://ar-foto.art/dazixozizamoxudumoriwizifwlk6.pdfIn PDF document text
    • http://formblckr1.xyz/37286344977eee30.pdfIn PDF document text
    • http://zirosax.iblogger.org/80415562827.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_600f580caf9a4.pdfIn PDF document text
    • http://reduslim-eu.site/class_11_computer_science_hindi_book_downloadlrgnq.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/bepukuba/kiterudoleluge.pdfIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_7175b9a055624e09af3368b9b758262d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a568f5d-3671-419c-a10f-1b36d9ef2da3/can_you_cancel_la_fitness_membership_in_person.pdfIn PDF document text
    • http://kitomalisufed.epizy.com/35042174056.pdfIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_b4d1a82003e143808eb0a9ad194b95df.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sasufufa/74937057730.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/27002982164.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/finanojaworexazogegod.pdfIn PDF document text
    • http://vigejufad.rf.gd/telecharger_encyclopedie_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/andromeda_strain_2008_full_movie_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d277a9ac-db09-4067-ba0f-4db312c8c931/descargar_formato_de_nomina_en_excel_gratis_para_venezuela.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_off0000e7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B5 5592 bytes
SHA-256: 44b4a180e4e924ff224aa8bc9d36a89337ef2f9590bbf45e9052d120d4c8bf20
font_01_sfnt_off0000fa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9C 11424 bytes
SHA-256: b3d06f84f93314128f74e8b3bb20d17dba2c3c72afb7d962765f17496bb21b5c

Open this report in the interactive analyzer, or submit your own file for analysis.