Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3ad3fd8bdc1cec…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 00:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 08b5be2fe10a1f2b51e7bf475fe7b55f SHA-1: 6a5122f1c6535032c4fe031dc590ea8e5f9a08a5 SHA-256: de3ad3fd8bdc1cec6bc8fe40bb9c55e64206b55af59150f67c6ce64bec0031cf
126 Risk Score

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 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://jottigo.ru/award?keyword=best+accessory+exercises PDF link annotation
    • http://fasad-dom.site/voz_passiva_ingles_exercicios_resolvidoszwzrn.pdfIn PDF document text
    • http://eurozone.pro/3853523395u1itw.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/52872192277.pdfIn PDF document text
    • http://chambre.xyz/commercial_vehicle_accident_report_form_ukcurpi.pdfIn PDF document text
    • https://nitevugumosu.weebly.com/uploads/1/3/4/5/134526644/881011444cad54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475562/normal_600bf6a5ea06f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5fcabee77d6fa.pdfIn PDF document text
    • http://healthytrands.com/how_do_you_use_a_proform_505_cst_treadmill_without_ifitlemyy.pdfIn PDF document text
    • http://retamos.mygamesonline.org/machine_learning_in_rust.pdfIn PDF document text
    • https://xonasuxodu.weebly.com/uploads/1/3/2/6/132681295/375d89ad73.pdfIn PDF document text
    • http://xitawefavam.medianewsonline.com/63342548457.pdfIn PDF document text
    • https://kadezejuvi.weebly.com/uploads/1/3/4/6/134603763/miwuvasokubutoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magomodatibotu.epizy.com/90260596596.pdfIn PDF document text
    • http://pixezoki.rf.gd/landing_page_react_template_free.pdfIn PDF document text
    • http://giwimev.rf.gd/jawepijatarexugexozar.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/think_and_grow_rich_audiobook_full_english_download.pdfIn PDF document text
    • http://zogonigabi.rf.gd/lorokivigopomesilik.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/bioshock_android_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/84066595803.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/azure_az-_203_study_guide.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_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 4980 bytes
SHA-256: 61ba4f1c582a8bd4c902b647b2f3ee5d4033f7e8e09183dca5eea78da3aad6e6
font_01_sfnt_off0000f0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 10084 bytes
SHA-256: c7ef0985c9064fe4448a4f753292eeaecf76c534e4ac2cd2545cbeec10c24ccf