Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f00cf42f60f8890…

MALICIOUS

PDF

88.5 KB Created: 2021-02-26 10:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 60cc01ec6bceec2dc2dab014aa22ab1b SHA-1: ea9ecfe8bb7633fc18ebfeb7810c8bb9ae3c0395 SHA-256: 9f00cf42f60f8890b0418d88b7ccb224a1752a9cf8341edf783d785d389dbd13
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'jacksth.ru', which is likely a phishing or malware distribution domain. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

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://jacksth.ru/strik?utm_term=general+data+protection+regulation+%2528gdpr%2529+summary PDF link annotation
    • http://tobufupevujuma.mygamesonline.org/safufevuriv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_600b1066f32eb.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/complete_list_of_dan_brown_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416929/normal_5fc648f41cb27.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/fidefofudi/cashflow_quadrant_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/julabaxamazizazapewuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/10302406147.pdfIn PDF document text
    • http://rubirabe.rf.gd/91317588680.pdfIn PDF document text
    • http://gepikadagutuv.epizy.com/fomisuzur.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/chemistry_notes_class_10.pdfIn PDF document text
    • http://nexopuvesoreben.epizy.com/bedingte_formatierung_excel_2016_wenn_zelle_leer.pdfIn PDF document text
    • http://kuporalegumema.epizy.com/adventistas_doctrina_falsa.pdfIn PDF document text
    • http://nanoxujam.epizy.com/alicia_keys_new_york_piano_sheet_music.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/mickey_mouse_cartoon_german_flag.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/97204195100.pdfIn PDF document text
    • http://jemileti.atwebpages.com/nakekuzuworabesupavog.pdfIn PDF document text
    • http://pepagipil.epizy.com/2003_acura_tl_auto_to_manual_swap.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/gta_vice_city_cheats_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/vodalivojobatur.pdfIn PDF document text
    • http://gifojakuwijipiv.rf.gd/harbor_breeze_beach_creek_led_ceiling_fan_remote_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/business_plans_in_nigeria.pdfIn PDF document text
    • http://vezapuro.rf.gd/kavaraz.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDE 5680 bytes
SHA-256: cd9d107fbf1c104606ffca2d46b229eab645296c8dfcc01e6af0cb74fa85b94a
font_01_sfnt_off00012f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F34 10936 bytes
SHA-256: 37fe4c2e78fa4447639463f7c4651a9397baf7043b1f2f53877299fd7e813cc5

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