Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d6dfb32f1ee97…

MALICIOUS

PDF

76.8 KB Created: 2021-03-28 15:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf1bf2d76106c19880a366d9cee9237d SHA-1: 73e9b12a9f66020e89ef481c2e36b470351b0cd1 SHA-256: 4f7d6dfb32f1ee9755cff2a5d66f412ab106fe4e1671727122e39c56dce50f5b
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body's content is a lure, attempting to trick users into visiting the malicious URL.

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://botokaw.ru/strik?utm_term=how+to+clean+the+panini+grill
    • http://dasazopemobor.mywebcommunity.org/adjetivos_en_frances.pdf
    • https://cdn.sqhk.co/dulidara/dji8gcj/national_defence_career_institute.pdf
    • http://pamatidela.getenjoyment.net/aditya_birla_sun_life_sip_cancellation_form.pdf
    • http://tadajixilatu.scienceontheweb.net/infosys_hr_interview_questions_and_answers_for_freshers.pdf
    • http://vopukisavenif.medianewsonline.com/95801958622.pdf
    • http://jalazekesofijot.medianewsonline.com/how_to_become_a_better_coach_and_mentor.pdf
    • https://cdn.sqhk.co/gogamosujimi/YFDMx5P/todo_cuba_tv.pdf
    • http://vasizazesunof.medianewsonline.com/que_es_el_alquitran.pdf
    • https://cdn.sqhk.co/razonavari/gjicgcJ/japanese_alphabet_hiragana_quiz.pdf
    • https://cdn.sqhk.co/levowexesu/hjuiaQk/78870222068.pdf
    • http://bagezokazuraw.medianewsonline.com/ziwekokobejukap.pdf
    • https://cdn.sqhk.co/fenazijeguk/apEZRjg/building_guide_terraria.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sinadi/69625627846.pdf
    • http://dujazenemelix.epizy.com/who_played_the_elephant_man_in_the_original_movie.pdf
    • https://s3.amazonaws.com/fazujo/folder_colorizer_windows_10.pdf
    • https://s3.amazonaws.com/mejifavo/programming_problem_solving_questions_and_answers.pdf
    • http://mapureju.epizy.com/dodumipigofimim.pdf
    • https://s3.amazonaws.com/rebomedug/what_is_the_song_helter_skelter_really_about.pdf
    • https://s3.amazonaws.com/zarusegibitumet/34714955274.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_off0000f208.bin
81fa817068a072706a35cb434c9d56aa3cb0454277c63a07aca25af6cc4aa932
pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 5072 bytes
font_01_sfnt_off00010356.bin
5b0a429d069ddc29936f783469dfd3cdafefcf736e0330cedb2da5c52cdf28e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10356 10324 bytes