Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac35940a922fc48…

MALICIOUS

PDF

86.7 KB Created: 2021-03-09 20:43:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71e2f16ca898b841d88d552a61b30a3e SHA-1: d2de845d31ba26ea7ed56748ac5629a88be19dd2 SHA-256: 2ac35940a922fc484b6c40f35cedae190c540167666b13715b70c2d72ca29ffb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the presence of embedded URIs and the overall detection profile suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://botokaw.ru/strik?utm_term=what+is+dry+mode+on+lg+portable+ac
    • http://zimezobot.getenjoyment.net/96854299304.pdf
    • http://tawokurabugo.22web.org/inverse_log_button_on_ti-89_titanium.pdf
    • http://memisada.mygamesonline.org/berlioz_symphonie_fantastique_5_movements.pdf
    • http://sevowina.medianewsonline.com/how_to_do_airplay_on_roku.pdf
    • http://silekutum.medianewsonline.com/cfa_level_1_topic_weights_2021.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pululusodogi/polovokexupedejepinuja.pdf
    • http://pekowob.onlinewebshop.net/hi_standard_sport_king_serial_number_lookup.pdf
    • https://s3.amazonaws.com/titugome/delta_model_14_bandsaw_manual.pdf
    • https://s3.amazonaws.com/domegagowevag/whatsapp_video_2019_funny.pdf
    • https://s3.amazonaws.com/voxazedisula/week_9_nfl_predictions_bleacher_report.pdf
    • http://tavamikilav.myartsonline.com/rezolagipev.pdf
    • https://s3.amazonaws.com/jeworurowam/avast_vpn_for_android.pdf
    • http://wagaguzejaf.rf.gd/best_self_help_books_free.pdf
    • http://ralirajuz.atwebpages.com/free_prefix_and_suffix_worksheets_for_4th_grade.pdf
    • https://s3.amazonaws.com/tigovatolis/ffxiv_eureka_pagos_relic_weapon_guide.pdf
    • http://mexesumofiruvaf.rf.gd/85788577273.pdf
    • http://luregaw.onlinewebshop.net/noxovunakinuvi.pdf
    • http://kepipejesa.epizy.com/accounting_equation_explained.pdf
    • http://vujuvisesakok.myartsonline.com/every_mans_battle.pdf
    • http://gadejoretalul.rf.gd/89552121059.pdf
    • https://s3.amazonaws.com/nuxomigo/47122152238.pdf
    • http://xapulena.epizy.com/review_of_a_random_walk_down_wall_street.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/90276140717.pdf
    • http://jurolabadujo.rf.gd/windows_10_for_pc_64_bit.pdf
    • http://jopivot.rf.gd/best_aerobic_step_platform_2018.pdf
    • http://fedubumisuvek.epizy.com/bleach_filler_skip_guide.pdf
    • https://s3.amazonaws.com/zemunomipazikez/well_always_have_summer_book_cover.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011573.bin
036515a8f019259a7a4f8c8d196eac15e19fa0b1b5a60138e43e2f249f73a31c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11573 5744 bytes
font_01_sfnt_off000128e3.bin
e2a9e24797e3aa6be58d9b5e31823a8a766850630e68c125de31d19d576066b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E3 10648 bytes

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