Malicious PDF — malware analysis report

Static analysis result for SHA-256 615472f98a852f0a…

MALICIOUS

PDF

70.0 KB Created: 2021-03-03 15:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 59af5a961efc7cee81be0dc08af7bac7 SHA-1: 55cd6a4a90c42f9bcd276cac780fc860bcef6351 SHA-256: 615472f98a852f0ae7a14e3d851c9148b73cca4b28e9ae71d5d5cdc190cf6222
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=modo+congiuntivo+e+condizionale+del+verbo+essere+e+avere PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453560/normal_5fd6825fb4ed5.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/7849776.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/2051209.pdfIn PDF document text
    • http://tehnoprom.org/bradley_bourbonnais_high_school_report_card0ld98.pdfIn PDF document text
    • http://inmyshtangen.xyz/is_vibration_good_for_your_backg0rlc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417669/normal_602ed981cfee5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_6015307755854.pdfIn PDF document text
    • http://domen3.club/47131448937g86dv.pdfIn PDF document text
    • https://kedosesu.weebly.com/uploads/1/3/4/8/134853013/5163168.pdfIn PDF document text
    • http://testersairf.xyz/best_bhagavad_gita_english_book682xe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tetigod.rf.gd/all_properties_of_periodic_table.pdfIn PDF document text
    • http://dakiwadizadenig.rf.gd/back_to_eden_book_free_download.pdfIn PDF document text
    • http://rezazaje.epizy.com/56617004380.pdfIn PDF document text
    • http://zexukojol.rf.gd/words_from_a_wanderer_by_alexandra_elle.pdfIn PDF document text
    • http://tedajeti.rf.gd/pelaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/bootstrap_form_border_style.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/sujet_brevet_physique_chimie_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/format_factory_for_android_tablet.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_off0000d1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D1 5364 bytes
SHA-256: e738acee9dfd3e892889703d6d531b8ffaff959271ea4913157dfbb99a5abfc8
font_01_sfnt_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 11284 bytes
SHA-256: 9c7f5d3b1bc9a46d5874df48411d2db4f6fb962627d332ed1ed3fe71dd6bb8f1