Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e06fcfd427a8463…

MALICIOUS

PDF

92.3 KB Created: 2021-02-26 21:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e6b949760746573aa3facefc3b7b8d SHA-1: e0c164be64f1e153951f324cad2732d37fb65510 SHA-256: 6e06fcfd427a8463823fe43039336920eba1691748e54cef0a9112136cb666db
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, which is likely used to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to the lure, suggesting a phishing attempt disguised as educational material.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=hurricanes+worksheets+high+school
    • http://fdvsefwfrw.space/tamil_adios_song_free3pmdj.pdf
    • http://familyit.pro/ap_art_history_memestaxxx.pdf
    • https://cdn.sqhk.co/nesuxozajek/aidJqXh/talking_pierre_the_parrot_unlock.pdf
    • https://cdn.sqhk.co/desogepupema/fxjg2ha/89746822746.pdf
    • http://cosmeteca.com/72669009124mztj.pdf
    • https://cdn.sqhk.co/zivuwimavez/eUWtc3b/xray_mod_minecraft_1._16_2.pdf
    • http://kegeminu.iblogger.org/90128329424.pdf
    • https://cdn.sqhk.co/zisenusaf/0ichgje/posobome.pdf
    • https://cdn.sqhk.co/xumobopore/d1YEjfX/weed_go_launcher_theme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://koroladejoj.epizy.com/how_to_draw_an_anime_nose_from_the_front.pdf
    • https://s3.amazonaws.com/kezemiradigu/55976146374.pdf
    • http://jonapepubenej.epizy.com/protobelt_katarina_guide.pdf
    • https://s3.amazonaws.com/bagisi/print_spreadsheet_in_mac.pdf
    • http://xadeboni.epizy.com/google_nest_outdoor_camera_installation_guide.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_off00012f09.bin
18acb2b62831c921405460869f09cc9c8efb7a6abe0641d69ef0d2270e5f3372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F09 5176 bytes
font_01_sfnt_off000140af.bin
ef295ab6bbf917a84c867cf8f3b888f7482bef729a8a071a67d70d4afae01991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140AF 10360 bytes

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