Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f7c84a367b7878…

MALICIOUS

PDF

78.5 KB Created: 2021-03-17 17:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 939b26cad2c67c2a416c822e24b1ad07 SHA-1: 33a97393be456281ff07c0d2cfcaa950a3cdbcf4 SHA-256: 36f7c84a367b78786f49d5d089e9113cb9f447a77c270182ec674eac7169bdfa
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to 'bologen.ru', suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=playerpro+apk+paid+download PDF link annotation
    • http://bivaxosufuxibo.mygamesonline.org/debejom.pdfIn PDF document text
    • http://warajuvevuv.medianewsonline.com/what_type_of_oil_does_a_2013_chevy_traverse_take.pdfIn PDF document text
    • http://kipuleli.iblogger.org/what_is_the_best_sword_style_in_anime_fighting_simulator.pdfIn PDF document text
    • http://alex-chekalev.com/consolation_of_philosophy_sparknotestjo1q.pdfIn PDF document text
    • http://boldly-grow.com/desh_bhakti_songs_ringtone5aip1.pdfIn PDF document text
    • http://dajexori.mypressonline.com/what_do_you_say_instead_of_macbeth.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/53689841481.pdfIn PDF document text
    • http://mamajan.space/caractersticas_del_aprendizaje_significativo_y_memorstico3ykbe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jesudojisa.rf.gd/blank_map_of_australia_with_states.pdfIn PDF document text
    • http://nawuxek.rf.gd/descargar_musica_gratis_de_zacarias_ferreira_2019.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/fundamentals_of_digital_logic_with_verilog_design_3rd_solution.pdfIn PDF document text
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_ab445189d66848299fa0c59cb533791b.pdf?index=trueIn PDF document text
    • http://waminakukivexo.rf.gd/how_to_fix_defiant_flashlight.pdfIn PDF document text
    • http://nunabidolo.rf.gd/can_i_train_chest_and_triceps_together.pdfIn PDF document text
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_2edb2865313340de9a03583ee9910b03.pdf?index=trueIn PDF document text
    • http://nijarigu.onlinewebshop.net/national_geographic_magazine_july_2020_download.pdfIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/ipad_mini_4_cover_target.pdfIn PDF document text
    • http://divifafapinuk.rf.gd/engineering_calculator_for_android.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_off0000eddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDC 5036 bytes
SHA-256: 34c2e36a6f8e8c405aa796001c0238c99e469c5fd6d988ee97671a298c32421a
font_01_sfnt_off0000ff25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF25 13952 bytes
SHA-256: 152401d40902c52f6209e8f75cb325c12193d4c6c4c28abbed294a70bab830bd

Open this report in the interactive analyzer, or submit your own file for analysis.