Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ae568b9c2bcfc5…

MALICIOUS

PDF

104.3 KB Created: 2021-04-03 04:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 79f55187cf36bc772bfb7f3d1e899060 SHA-1: 927265e42fa1505e585523b8e35bd9c7ca53d93b SHA-256: 09ae568b9c2bcfc59fde990ee75d65ab03c064246a81b0abe23ecc783a05f54e
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by heuristics as a link farm and a phishing/malicious PDF. The document body, though heavily obfuscated, contains references to 'Sony bdp-s1500 connect to internet', suggesting a lure for users seeking technical assistance or product information. The presence of numerous external URIs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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://resalured.ru/strik?utm_term=sony+bdp-s1500+connect+to+internet PDF link annotation
    • https://puvomowaja.weebly.com/uploads/1/3/4/3/134318832/5883881.pdfIn PDF document text
    • http://normab-id.com/wijaziziro5lusq.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/ha1l5rj/pafutumaselivu.pdfIn PDF document text
    • http://fredo.run/186993964496a9qq.pdfIn PDF document text
    • http://ita-bio.fun/98604326304cybtu.pdfIn PDF document text
    • http://perfectiona.online/score_sheet_cricket_match2iwu4.pdfIn PDF document text
    • http://itawegan.space/difavifa1uzgw.pdfIn PDF document text
    • http://midimox.getenjoyment.net/paradise_lost_summary_and_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/radofufalam/dQFigDd/75769310651.pdfIn PDF document text
    • https://xasamaxubema.weebly.com/uploads/1/3/5/3/135387487/a8274cc1e.pdfIn PDF document text
    • http://xofebuledat.scienceontheweb.net/epidemiologia_nutricional.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/gewoba.pdfIn PDF document text
    • http://suvonenexazu.mywebcommunity.org/carolina_wings_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/gdDdmDT/pokemon_showdown_avatar_commands.pdfIn PDF document text
    • http://kigurumi.org/husqvarna_240e_carb_adjustment5nppx.pdfIn PDF document text
    • http://bbflowers.net/rode_ntg_2_vs_videomic_procqerp.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/cvIShvf/24532799315.pdfIn PDF document text
    • https://lumosezuto.weebly.com/uploads/1/3/4/4/134499790/gisigu.pdfIn PDF document text
    • http://circleshtang.xyz/how_does_time_relativity_work_in_interstellar18k4o.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/vazivimizeru-kusofebadaz-jufogugig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://motuvogipe.onlinewebshop.net/banking_awareness_questions_for_bank_exams.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/sample_investigation_report_employee_theft.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/tudamubetam.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_off00015736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15736 5520 bytes
SHA-256: e8e7de4b2a6a60663793b0247cf379781bfaa2f444bfe15b39f8e225fe521e67
font_01_sfnt_off00016a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A28 11512 bytes
SHA-256: 2e8ff9d275d9d22399820e7b60d0411782e5f6b65ad527f1885f861a6fc9ce8e

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