Malicious PDF — malware analysis report

Static analysis result for SHA-256 5388e80af1deb55a…

MALICIOUS

PDF

86.3 KB Created: 2021-03-03 19:28:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 15c485677943d7c5b9f022eb35220535 SHA-1: 2d47f7de8f7641f68d5086c3071e56235c7f9a1b SHA-256: 5388e80af1deb55a7c7506a40d2ef639fbff58f2dc05320cb8613371a12bf90f
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically pointing to 'https://xajibur.ru/strik?utm_term=you+can+be+a+stock+market+genius+espa%25C3%25B1ol+pdf+gratis'. The document body, though heavily obfuscated, suggests a lure related to 'stock market genius' and a free PDF. This combination strongly suggests a phishing attempt to trick users into downloading malicious content or visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=you+can+be+a+stock+market+genius+espa%25C3%25B1ol+pdf+gratis PDF link annotation
    • http://apple-fruit.space/rozezisuauekw.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/dirozenisaladudog.pdfIn PDF document text
    • http://raftgjgr.space/keurig_k400_series_manualat2gz.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/jixawezipeg.pdfIn PDF document text
    • http://2022god.com/conjunctions_worksheets_with_answers2n0hg.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/gupojuv.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/vajisukuvetosi.pdfIn PDF document text
    • http://2022god.com/412208625636c46n.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/sewamos/plural_possessive_nouns_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/smackdown_here_comes_the_pain_game.pdfIn PDF document text
    • http://fozeworot.rf.gd/julius_caesar_act_2_scene_1_which_summary_of_the_passage_is_the_best.pdfIn PDF document text
    • http://wudujijejek.rf.gd/65272387869.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/what_month_to_plant_tomato_seeds.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/41657585183.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/oxford_handbook_of_analytic_philosophy.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/azure_resource_manager_cloudformation.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/formato_de_carta_poder_simple_para_imprimir_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/pupipasume.pdfIn PDF document text
    • http://zagopemolal.rf.gd/vobagenuvuje.pdfIn PDF document text
    • http://xurosuforudev.atwebpages.com/iso_9001_version_2015_audit_checklist_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/pijowatemikenunozire.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/read_theory_analogies_3_level_8_answers.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_off00010f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F54 5852 bytes
SHA-256: 2525e0c7b4f9e0c25be8a4932077723197c895e4953bb074bf3c6e4ff3e4840e
font_01_sfnt_off000122eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EB 11024 bytes
SHA-256: e6366325213e99a6e3ac15ae8dc883052e48491b5e2feba7edd747bdd0bc6822