Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad78da868e3d3c8…

MALICIOUS

PDF

71.8 KB Created: 2021-03-02 21:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a7b7fbb7ce1dc5ce6a47b1fa7e39bc08 SHA-1: 3a4fd5d7e7306fa97a1ee29e0e699923cac8aa01 SHA-256: 4ad78da868e3d3c8f1ae444adfa5031409ef9748e163f726884deea982bdfa0f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://xajibur.ru/strik?utm_term=me+before+you+title+song PDF link annotation
    • http://bilkaita.space/raghuvaran_b_tech_movie_hdswk6k.pdfIn PDF document text
    • http://gukimunejorupod.iblogger.org/honeywell_wireless_smoke_detector_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/gj8UgcJ/shooter_games_xbox_one.pdfIn PDF document text
    • http://fupuwage.22web.org/fumizugoperilisapetivux.pdfIn PDF document text
    • http://bajexubazewa.iblogger.org/bonfire_meme_music.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/xPD1lig/mineral_oil_uses_for_skin.pdfIn PDF document text
    • http://dipewafotowagu.22web.org/weider_pro_4300_exercise_chart_download.pdfIn PDF document text
    • http://autolombardpro.ru/2232511361730o7e.pdfIn PDF document text
    • https://cdn.sqhk.co/dexediwiboze/kDP9zhd/4239744978.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/agecdge/tucson_gem_and_mineral_show_2020_map.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/dubiditiginowo/43733339372.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/introduction_to_the_calculus_of_variations_and_its_applications_wan.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/beethoven_sheet_music_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/kstp_tv_traffic_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/51977051480.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/distance_travelled_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/free_photoshop_book_cover_template.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/ant_video_er_for_firefox_66.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/38932866880.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/23388708655.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_off0000ddaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAF 4972 bytes
SHA-256: 4a451c2f45acde3bd4d825cfa15cae2652be51bb79ac12749a1f7e52d7cdceb9
font_01_sfnt_off0000eec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC1 10520 bytes
SHA-256: 6dde4e1cb131b400335c32d25617dd5d3a3a9713571842a069de5aa4a32880a6

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