Malicious PDF — malware analysis report

Static analysis result for SHA-256 194c58f20f2fc694…

MALICIOUS

PDF

77.0 KB Created: 2021-03-23 20:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b83a09f6eb7e7c86eeb0789ff42ff631 SHA-1: f5e51fc36a0c3f9a42e46d76cd2bb44943454e92 SHA-256: 194c58f20f2fc69485ed98d291eaf7bb78774d77cbe945daf0d945aeb705adcc
126 Risk Score

Malware Insights

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

The PDF file contains numerous links to disposable domains, a common tactic for phishing and malware distribution. The embedded URL and the document body suggest a lure related to 'sonic games unblocked at school', directing users to potentially malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/wix?keyword=sonic+games+unblocked+at+school PDF link annotation
    • http://juvizex.sportsontheweb.net/34148987904.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/oiihbDo/3413495732.pdfIn PDF document text
    • http://giwewigipebi.medianewsonline.com/18955238430.pdfIn PDF document text
    • http://ximasoj.22web.org/49364156263.pdfIn PDF document text
    • http://xiwupulo.medianewsonline.com/past_simple_story_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/tikalijit/5dRXgiA/60622259114.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/9ix4xja/school_management_system_project_php_description.pdfIn PDF document text
    • http://pitikudefojeken.getenjoyment.net/what_are_the_symptoms_of_a_bad_pcm.pdfIn PDF document text
    • http://gedirobidepud.scienceontheweb.net/35601445814.pdfIn PDF document text
    • http://luzupogakij.sportsontheweb.net/applebee_s_menu_file.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/zajijf0/21037584165.pdfIn PDF document text
    • http://situvupumu.medianewsonline.com/business_english_cambridge.pdfIn PDF document text
    • http://dekoriribazovax.mywebcommunity.org/afro_american_symphony.pdfIn PDF document text
    • http://bowojimiwa.22web.org/93666427161.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/14d4e836-e4ab-4cb5-8590-9ed7ec1d385b/betavukofonerulor.pdfIn PDF document text
    • http://pavabiza.atwebpages.com/lodivibonitimukasovewataf.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/1_centmetro_cbico_cuantos_mililitros_son.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/cabin_crew_resume_template.pdfIn PDF document text
    • http://bevavotubuzepu.rf.gd/masterbuilt_mes_340g_bluetooth_electric_smoker_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/94757352318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6284052a-c8f7-472f-870e-9b2ec5bcc832/how_to_change_bulova_watch_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c458e958-3e5c-46cc-b430-dd1265ba205b/c_data_structures_and_algorithms.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/letter_writing_template_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15519c3f-7e7a-4c8b-a1c1-9b6fbebaa137/40427860749.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_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 5564 bytes
SHA-256: 54a92aa891f3eb885bcca526bb1c2b19d275742b0f5560bc819a17863f40b3ce
font_01_sfnt_off00010030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10030 11132 bytes
SHA-256: 8b7f986cd47ee1fa12de36efecf58dabcbe26b524cca529ae0558163a679192e

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