Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee155ca5903b539f…

MALICIOUS

PDF

80.6 KB Created: 2021-03-07 00:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e44128717efdd821a6a0f5c3b0e83165 SHA-1: ea6b9185e15ef6f9b7a0c7aea36680c610adea3a SHA-256: ee155ca5903b539f49acdbdfcf8f0862660db2a1391b569fc94ec1d3f620571a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search engine result, likely to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=what+are+the+benefits+of+observing+safety+procedures+in+the+workplace+brainly
    • http://nuloriwilorij.scienceontheweb.net/how_to_write_a_reading_reaction_paper.pdf
    • http://tufuwavaziga.mygamesonline.org/fases_del_proceso_metodolgico_de_la_investigacin_cuantitativa.pdf
    • https://cdn.sqhk.co/merabuvi/Thc1ijz/pew_pew_meme_sound.pdf
    • https://cdn.sqhk.co/moserusoba/Ct3gcJj/tuxopipizugomiganadoku.pdf
    • http://pusovemolexed.scienceontheweb.net/troy_bilt_lawn_mower_blades.pdf
    • http://nekuwagibajese.getenjoyment.net/dan_schutte_mass_of_christ_the_savior_sheet_music.pdf
    • https://cdn.sqhk.co/noloxunipe/jcgj8ia/fataxuvedediwinolefuri.pdf
    • http://desokore.medianewsonline.com/classes_of_antibiotics_and_mode_of_action.pdf
    • https://cdn.sqhk.co/mukujoripu/gdWwEhc/flashlight_song_lyrics_espanol.pdf
    • https://cdn.sqhk.co/wepiwojeta/hjihbZi/best_pickup_truck_philippines_2021.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kezemiradigu/votalanu.pdf
    • https://s3.amazonaws.com/jukezeluf/logic_gates_exercises_with_answers.pdf
    • https://s3.amazonaws.com/kesumasaka/latex_book_template_code.pdf
    • https://s3.amazonaws.com/jarawaxanivu/82040327430.pdf
    • https://s3.amazonaws.com/gidibesuxi/gufipizatinanafiparobuzuw.pdf
    • https://s3.amazonaws.com/xarojapi/keurig_hot_2.0_water_filter_starter_kit.pdf
    • https://s3.amazonaws.com/regovadeje/zetetojodukojin.pdf
    • https://s3.amazonaws.com/tamovagag/angular_component_template_not_showing.pdf
    • https://s3.amazonaws.com/wetevali/19536594449.pdf
    • https://s3.amazonaws.com/gixirojozogufux/xowusepaniduxexixoxuzixag.pdf
    • https://s3.amazonaws.com/jivala/17430860715.pdf
    • https://s3.amazonaws.com/zuponefi/18815749324.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_off0000fc00.bin
8ed608898b5673d7afafb25fe7d33ee9ddbd2ff641c7c7beb69a8a60a8cf4293		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC00 5888 bytes
font_01_sfnt_off0001102d.bin
5c87bff9ca328e19357f5e4c3ae8f7fa0007a872daa52a54fe608c4563f14f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1102D 10468 bytes

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