Malicious PDF — malware analysis report

Static analysis result for SHA-256 29939f0ff58460db…

MALICIOUS

PDF

79.4 KB Created: 2021-02-28 20:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ebed2aa0256e052a8bac47f29246367b SHA-1: 9b89e8406c9b6033c2d06bcfdb0eae74b28b2595 SHA-256: 29939f0ff58460dbba28e5ad6550d8022856ef9c1f158812569dbc42a00f1410
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as 'Pdf.Phishing.Trojan'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to business definitions, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=what+is+business+definition+in+strategic+management PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373782/normal_60397e26196da.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/zozidosas.pdfIn PDF document text
    • http://sunufosabupes.scienceontheweb.net/pioneer_avh-x4700bs_not_turning_on.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458833/normal_5ff8d4444bc46.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/bunker_hill_wireless_security_alert_system_harbor_freight.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/what_sd_cards_are_compatible_with_galaxy_tab_a.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/lg_hbs_810_factory_reset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464327/normal_5fd196d4a604f.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/what_items_are_gluten_free.pdfIn PDF document text
    • http://votixibutiro.medianewsonline.com/quotes_about_love_in_the_book_their_eyes_were_watching_god.pdfIn PDF document text
    • http://piwifeg.22web.org/orbit_sprinkler_timer_replacement_key.pdfIn PDF document text
    • http://basijinogasa.22web.org/ashrae_handbook_fundamentals_2005.pdfIn PDF document text
    • http://runivofo.iblogger.org/1123760555.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fukekixejup.epizy.com/mapuzimubelabagiliz.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/edgar_allan_poe_biography_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/angular_simple_login_form_example.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/dezoduzavigawakowojovomab.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/39427504240.pdfIn PDF document text
    • http://kubunixa.epizy.com/tipovagixaviwu.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/tafigenomerumatuwamev.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/39569648350.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_off0000f86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86E 5556 bytes
SHA-256: ecb0bb0329ae1a33d24ba3e4e7204dcfb3ba56bd14dd633c01297d8445e46170
font_01_sfnt_off00010b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 10556 bytes
SHA-256: d62e5a43aa0226b438dc94ed461486912fb6ef9271f0eb4fcab2e03d824dc996

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