Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a021ba7596a57f…

MALICIOUS

PDF

141.2 KB Created: 2021-02-05 11:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e6f53aead71197de67e17b28c046b786 SHA-1: dc360a1bb94d4a66ce60dabeeaceea453de9a99b SHA-256: 06a021ba7596a57f587034bab300bc726a9595dc3fe23f6b5ad8172214144110
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick users into installing malicious software by masquerading as a necessary browser update or plugin. While no scripts were directly extracted, the presence of external URIs and the nature of the lure suggest it likely leads to a malicious payload download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://leonvi.ru/aws?utm_term=autocad+2013++link PDF link annotation
    • http://energierecrute-emplois.com/my_hillside_familyjewve.pdfIn PDF document text
    • http://lnstagramverifycentre.com/47283682727efp10.pdfIn PDF document text
    • http://cadenalia.com/tour_the_galaxy_stoooms8.pdfIn PDF document text
    • http://drilltech.info/yugioh_legacy_of_the_duelist_deck_guidev257a.pdfIn PDF document text
    • http://jumpfs.space/tank_trouble_limpopoaee1e.pdfIn PDF document text
    • http://mazanatur.space/wawagisitolif1ak0m.pdfIn PDF document text
    • http://preplafond.xyz/guzevadodesofobexibiru24yk.pdfIn PDF document text
    • http://barashik.space/ticket_to_ride_song_lyricst6kv2.pdfIn PDF document text
    • http://drovazvenigorod.ru/monopoly_board_template_editableyi69v.pdfIn PDF document text
    • http://erogan-encolumbia.site/zesunoxobb555.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/tesotiwapax/serudexuwuta.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/valopo.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/syria_chemical_weapons_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/enniscorthy_mart_sheep_report.pdfIn PDF document text
    • http://rowesatuminef.rf.gd/audit_report_opinion_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/22975188734.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/5175971312.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/violin_viola_trio_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/9912535079.pdfIn PDF document text
    • http://niwuzowebod.epizy.com/52644808482.pdfIn PDF document text
    • http://novegiw.rf.gd/zalo_cho_macbook.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/vicroads_learners_test_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF39 4032 bytes
SHA-256: 51036caeaaec89de8680405f123e86dc84267b6fe8b2de34ea0e6c667ded1fe3
font_01_sfnt_off0001edab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EDAB 5200 bytes
SHA-256: c52e0d89812e30971dd21e35fb859b4e883d00701b194eada77fe5a0b8c5ce20
font_02_sfnt_off0001ff7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF7E 11596 bytes
SHA-256: 0d097e251004f3b82b9bb8bfaf897feb1cd830edb64d49b50742415ee6c2ada2

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