Malicious PDF — malware analysis report

Static analysis result for SHA-256 a292c09bfb79615d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-27 14:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ab6b1ebb3888eb5e012cd7849ad1a9 SHA-1: d3794f324f945ab536035cb33337785b6c72b4ae SHA-256: a292c09bfb79615d1caa5342c96f50b59de72568cb690761e20b3f62b9a83607
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to lead the user to a malicious site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/strik?utm_term=what+is+a+smart+goal+acronym
    • http://1offpark.xyz/bise_gujranwala_11th_result_2018ig83u.pdf
    • https://cdn.sqhk.co/mekaxosur/he3idOe/free_bass_booster_apps_for_pc.pdf
    • http://xaninivinekeni.iblogger.org/chgyam_trungpa_rinpoche_shambhala_the_sacred_path_of_the_warrior.pdf
    • https://cdn.sqhk.co/xibidodoko/Fgf6Oji/63112599406.pdf
    • http://bukanugizini.mygamesonline.org/achilles_tendonitis_patient_information.pdf
    • http://liketime.fun/dopipaxuijt.pdf
    • https://cdn.sqhk.co/fuvebopeweb/Lidijih/pixel_starships_crew_rooms.pdf
    • http://dazomasuw.22web.org/xatuwefur.pdf
    • http://resapus.scienceontheweb.net/canine_adenovirus_type_2.pdf
    • https://cdn.sqhk.co/kedetofido/hOikTeY/57808997683.pdf
    • http://fibutogu.mywebcommunity.org/lasko_tower_fan_remote_control.pdf
    • http://santecmb-sarl.com/hp_elitebook_8440p_new_price_in_pakistans1pgb.pdf
    • https://cdn.sqhk.co/rufosopufu/gdjfcx9/greatest_hits_radio_competition.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vapite/good_interview_questions_for_retail_manager.pdf
    • https://uploads.strikinglycdn.com/files/116735eb-6f53-40c7-aa75-31a114970657/may_2017_sat_answers_and_explanations.pdf
    • http://zulesubepire.rf.gd/gunol.pdf
    • https://uploads.strikinglycdn.com/files/6b8365a7-2765-4699-97f6-585793e563fa/what_does_odd_functions_mean.pdf
    • https://s3.amazonaws.com/pibabopuduj/listview_with_adapter_in_android_example.pdf
    • https://s3.amazonaws.com/faluzotixupi/best_voice_auto_tune_app_for_android.pdf
    • http://lozufoxozaniso.rf.gd/basic_fundamental_of_electrical_engineering.pdf
    • http://winimoviwimi.myartsonline.com/78306413419.pdf
    • http://zimofizamar.epizy.com/63785887072.pdf
    • https://uploads.strikinglycdn.com/files/9577b03a-132c-4efd-b1e4-673c4fa06d2e/how_to_lose_weight_naturally.pdf
    • https://s3.amazonaws.com/fibesezati/what_is_the_rocking_horse_winner_really_about.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_off0000f6a4.bin
abbbf464ff92bfc9249005219d8e498518368dc477220b4bbd4b926edbfa6a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A4 5328 bytes
font_01_sfnt_off000108ab.bin
5d85a678c6c76ac28e95e2c564a174e6045b536334bc1888b88bc9603c8f2ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108AB 10456 bytes

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