Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4eb87422eec58f8…

MALICIOUS

PDF

94.2 KB Created: 2021-03-15 16:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 933f3acfdd5f4be8f9228869dc678521 SHA-1: 63e2568d352ca6b16c7c6d5a1c2a79ffb3f19939 SHA-256: b4eb87422eec58f86c3de123780acb62d776c0252bc46b58be4b477eb4919a6f
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'dugedepap.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a technical guide, aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/wix?keyword=cisco+prime+infrastructure+3.2+ordering+and+licensing+guide PDF link annotation
    • http://kinemulawaw.sportsontheweb.net/how_to_change_clock_on_samsung_microwave.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/what_is_the_literal_meaning_of_burn_the_midnight_oil.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/bosquejos_evangelisticos_de_salvacion.pdfIn PDF document text
    • http://wuxetij.mypressonline.com/apprendre_a_dessiner_un_portrait.pdfIn PDF document text
    • http://lowabunuzoxa.getenjoyment.net/frutas_y_verduras_de_temporada_espaa.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/structural_isomerism_in_organic_chemistry.pdfIn PDF document text
    • http://tofugezupeb.mygamesonline.org/how_do_i_connect_my_netgear_wifi_extender_to_5g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fopagozijudiri.epizy.com/android_get_version_name_programmatically.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/33909334922.pdfIn PDF document text
    • http://mifojizu.myartsonline.com/afcat_1_2020_question_paper.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/citizen_blue_angels_watch_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/lawn_boy_returns_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/delonghi_oil_filled_radiators_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/faxuworegudagejevana.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/team_meeting_agenda.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/dyslipidemia_guideline_2019_facebook.pdfIn PDF document text
    • http://galikunulumofi.epizy.com/26729065648.pdfIn PDF document text
    • http://rutuvofogiseba.epizy.com/40390690421.pdfIn PDF document text
    • http://pedirite.onlinewebshop.net/abandono_escolar_em_cabo_verde.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_off000130b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130B6 5708 bytes
SHA-256: 8116f9b17f3f140ce08a3c2c254ac17462a91ca022023d8d3ee629a74f4b17e2
font_01_sfnt_off00014414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14414 11584 bytes
SHA-256: 94992d9d116074f1280c333123087d1f503abf5b33a90ac3662f29a879076c81

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