Malicious PDF — malware analysis report

Static analysis result for SHA-256 618dc1fe7c87732b…

MALICIOUS

PDF

77.4 KB Created: 2021-03-18 21:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ec55a774a9ac79dfa7c6e13174b5be3 SHA-1: d01f49c27425f00535a64d37ac4722d60facb921 SHA-256: 618dc1fe7c87732b4ded486251c7891f4b4fcf366a3eeeba378cb4fa98430674
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL leading to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a game download, aligning with phishing tactics. The presence of an external URI points towards an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/123?utm_term=street+fighter+2+game+for+android
    • https://vawevoza.weebly.com/uploads/1/3/1/4/131482963/gekumugifa.pdf
    • https://nakalefa.weebly.com/uploads/1/3/4/5/134522788/fadununowe_rubofiverivor.pdf
    • http://bomaduworofa.medianewsonline.com/how_to_find_slope_of_secant_line_given_two_points.pdf
    • https://cdn.sqhk.co/texekikevow/jiGjigh/usda_aphis_vs_form_7001.pdf
    • https://cdn.sqhk.co/pusuvizodez/gcUgf8V/boyce_avenue_songs_album_free.pdf
    • https://cdn.sqhk.co/bikegola/gg5gjhj/wowojexobosukefogojibeke.pdf
    • https://luvabuzizav.weebly.com/uploads/1/3/5/2/135294148/6838115.pdf
    • https://cdn.sqhk.co/xovikojux/3xicvzF/attendance_management_system.pdf
    • https://cdn.sqhk.co/tororukiwuri/idiighk/sheet_music_jump_van_halen.pdf
    • http://ladujose.sportsontheweb.net/wotuze.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sosupejuxofedo/jorejenixevul.pdf
    • https://s3.amazonaws.com/jiwisi/counter_terrorist_mod_apk_uptodown.pdf
    • http://mojozore.myartsonline.com/quadratic_transformations_quiz.pdf
    • https://uploads.strikinglycdn.com/files/c8f3a5c3-252a-4f25-80c7-1fc69d63e50a/pentair_pool_pump_seal_plate.pdf
    • http://merovuditipin.onlinewebshop.net/ronco_showtime_rotisserie_oven_1250_watts_4000_series.pdf
    • http://rupegofiminatef.epizy.com/30611915522.pdf
    • http://topagujowulefe.epizy.com/54237000049.pdf
    • http://vorivur.epizy.com/roman_empire_flag_wallpaper.pdf
    • https://uploads.strikinglycdn.com/files/494f1d0b-5cc9-4852-a188-2c03e0187f20/mr_coffee_burr_grinder_how_to_clean.pdf
    • https://uploads.strikinglycdn.com/files/026963a1-8b75-46b8-952d-7e3b74ee551a/13838915273.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46a.bin
949848e7e31964e7c605762733dfb5711a4e876f50f9abbdb063d0f80428cb2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE46A 5136 bytes
font_01_sfnt_off0000f5b1.bin
d8ce2f6dbdc43ae6ffa8e3d10eb1fda940e830f717817f57e8c9a1afcfa4b9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B1 10848 bytes
font_02_sfnt_off00011a63.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A63 4324 bytes

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