Malicious PDF — malware analysis report

Static analysis result for SHA-256 df28e3f43fd67a82…

MALICIOUS

PDF

74.2 KB Created: 2021-02-27 07:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 075d9696ea28cd446e20540ac5cd9497 SHA-1: f257b4a423ef3f93c8ea85b74957fb9f449e6ced SHA-256: df28e3f43fd67a824d0c67dcaceb702f750acea28bd2aea7aa8e67a08490ddc4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely to host phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=what+does+a13+mean+on+my+honda+civic PDF link annotation
    • http://piredvizhnik.com/game_commando_survival_battleground_mod_apks9z0k.pdfIn PDF document text
    • http://rankingcoach-seo.com/enfold_theme_custom_templateei3rb.pdfIn PDF document text
    • http://scm03.ru/what_bra_size_is_mia_khalifaemdwf.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/hdhbIia/remaining_matches_for_liverpool_and_man_city.pdfIn PDF document text
    • https://cdn.sqhk.co/tabuguran/hggiyWg/piano_man_melody_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/xawowatu/Phahgmj/color_palette_from_image_url.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/jhYgcij/nvidia_gamestream_pc_to_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/idijF8e/laniwade.pdfIn PDF document text
    • http://xusetelokumupoz.iblogger.org/multiple_intelligences_examples_in_the_classroom.pdfIn PDF document text
    • http://itnegozio.info/bosch_glm_35_nz565uv.pdfIn PDF document text
    • http://stixlife.info/2004_dodge_ram_1500_quad_cab_5.7_hemi_specsiau17.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/jidagafinuxesu/excel_date_format_day_of_week_short.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/65920513022.pdfIn PDF document text
    • http://balazetesu.epizy.com/42541211317.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/search_by_image_apk_mod.pdfIn PDF document text
    • http://xunonevikonog.rf.gd/cars_3_official_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/bennett_university_application_form_fees.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/47195923854.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/jotubut.pdfIn PDF document text
    • http://mafukifuwu.epizy.com/rifadavu.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/close_reading_comprehension_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/36198851433.pdfIn PDF document text
    • http://sadakukozami.rf.gd/39224861091.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_off0000e5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A4 5444 bytes
SHA-256: 9226557aaa3ab4b133b75011e51e942f7b5580351c6e874d2bf7904beba9d7bf
font_01_sfnt_off0000f821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF821 10348 bytes
SHA-256: 5b6323966d94f671f79119afaba001fe3e30fc54ab9130c450552c6020f8b918

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