Malicious PDF — malware analysis report

Static analysis result for SHA-256 c684e580600c681e…

MALICIOUS

PDF

80.8 KB Created: 2021-03-28 02:04:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 825e1c70aef58f71cce0c094249eca5f SHA-1: 491cfab006f77790df4eb8091395d3b3a5cabd43 SHA-256: c684e580600c681ed481596fe41a63f1ea09d7ba27f7afd793875c7aeebcda33
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, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create fake documents for phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://crophysi.ru/wix?keyword=mu+legend+dark+lord+guide
    • http://reduslimitalia.site/maqueta_de_secciones_conicas482st.pdf
    • http://astropsychology.website/aadhar_card_form_in_telugu7righ.pdf
    • https://vefesipawadupo.weebly.com/uploads/1/3/4/7/134746991/5078250.pdf
    • http://bapetobam.iblogger.org/vujidesa.pdf
    • https://puwibovur.weebly.com/uploads/1/3/4/6/134639487/lunaji-dixaziz-zefoxu-deponebir.pdf
    • http://cetop.xyz/cbse_6th_class_maths_textbook_solutions_chapter_1tviv8.pdf
    • https://cdn.sqhk.co/komukopa/l7rij6m/brazil_simulator_2_premium_apk_free_download.pdf
    • http://trysucre.pro/wind_in_the_willows_musical_spring_lyricslf6hz.pdf
    • http://lafarupikawa.22web.org/are_hillsborough_county_schools_open_on_veterans_day.pdf
    • http://20970907.net/soduxudedugu490p3.pdf
    • http://xazezojalaz.22web.org/89164775013.pdf
    • https://xuvuvigaxopezut.weebly.com/uploads/1/3/4/7/134721928/ribijusekegupib.pdf
    • https://zesalogerevuj.weebly.com/uploads/1/3/4/6/134684883/feguf.pdf
    • http://subeziti.22web.org/spotify_android_tv_apk_cracked.pdf
    • https://cdn.sqhk.co/jekurona/jchjnjd/fidget_spinner_bearings_walmart.pdf
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/08c985.pdf
    • https://cdn.sqhk.co/xuxinugad/crsOqPM/flix_movie_schedule.pdf
    • https://cdn.sqhk.co/sowuwinadapu/2ljjRbL/pexizekobifatot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://betitunusepa.epizy.com/pigamofesigevuponelud.pdf
    • https://s3.amazonaws.com/paxunu/kaththi_coin_fight_bgm_masstamilan.pdf
    • http://dobejevilorizu.epizy.com/google_apps_store_free_for_pc.pdf
    • https://s3.amazonaws.com/tomaxade/ramopoparazamekobodivin.pdf
    • https://s3.amazonaws.com/wajufifenoxuj/fafudemoragixudevepuza.pdf
    • https://s3.amazonaws.com/mexijegedakol/65725509931.pdf
    • http://gisobugiwe.rf.gd/60984796153.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_off0000ff95.bin
294f1357bb54184ff1d14f9aa0c84bc542650bf90771657062bb04f3e4f73af6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF95 4884 bytes
font_01_sfnt_off00011051.bin
2ab0aa672d76a2ae985ba5ee30d14346753e02298b6c0e54c45aa92555c710b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11051 11060 bytes

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