Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f84718e2fdaa170…

MALICIOUS

PDF

77.9 KB Created: 2021-03-29 19:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa3e30ff9067bec71a835fa324ea3b78 SHA-1: 59631a6b784d5280930b3a2b662ca4215c5c0447 SHA-256: 8f84718e2fdaa170d32f7f95d5773e7760fa00079628d335db935d4d79f7929a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a heuristic indicating an external URI. The embedded URL 'https://botokaw.ru/award?keyword=eeg+de+sommeil+pdf' suggests a phishing attempt to lure users to a malicious site. While no scripts were explicitly extracted, the PDF format and the nature of the URL point towards a phishing or social engineering attack vector, likely involving embedded JavaScript for redirection or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/award?keyword=eeg+de+sommeil+pdf
    • https://cdn.sqhk.co/vafegijateno/ifFhamR/fox_theater_showtimes.pdf
    • https://cdn.sqhk.co/kinanekoxo/iilWZic/dipup.pdf
    • https://cdn.sqhk.co/votezevon/ggVwgjF/pet_rescue_saga_game_1228.pdf
    • https://cdn.sqhk.co/funixatugesi/Pjdhjgd/9730361816.pdf
    • http://mifopevoruroga.22web.org/sawuwof.pdf
    • https://cdn.sqhk.co/rogekanus/BgdhjiV/84056507099.pdf
    • https://cdn.sqhk.co/zimuteraf/ahchTv9/wheel_of_fortune_games_online.pdf
    • http://wopexobow.mywebcommunity.org/cpr_latest_guidelines_2020.pdf
    • https://cdn.sqhk.co/xusopusavo/jhhjYie/3477068763.pdf
    • http://jafoxidulez.mypressonline.com/mesalitekigoguzavisevu.pdf
    • https://cdn.sqhk.co/velijituma/jciiulG/web_design_software_adobe_dreamweaver_cc.pdf
    • http://wudazex.sportsontheweb.net/pleomorphic_adenoma_review.pdf
    • https://cdn.sqhk.co/vuwonesi/0bc8Mib/stick_z_super_dragon_fight_unlimited_money_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xewamejixolefaj/restaurant_company_profile_sample.pdf
    • http://rukosivujuxu.atwebpages.com/13074403385.pdf
    • https://s3.amazonaws.com/mujevubutukoxu/les_miserables_broadway_cast_2019.pdf
    • https://uploads.strikinglycdn.com/files/64433e74-8870-432b-8625-1df7942f9c08/who_is_project_zorgo_leader.pdf
    • https://s3.amazonaws.com/kovozenamofox/ralaxikawozonagizo.pdf
    • https://uploads.strikinglycdn.com/files/cf524ec5-a72b-47b6-89e0-0e5fc5c07090/85680165660.pdf
    • https://s3.amazonaws.com/tomaxade/natowazozofirawusilud.pdf
    • http://dudameridetira.epizy.com/vizapudisemofif.pdf
    • https://uploads.strikinglycdn.com/files/600d66ad-d782-4d8b-b59c-4760b2babc2f/john_g_lake_books_drive.pdf
    • https://s3.amazonaws.com/wurivuve/restaurant_building_vector_free.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_off0000f1c5.bin
71877a51a1358b2b8bc75052feea371d355a3066ab8b99395751753010670d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C5 5012 bytes
font_01_sfnt_off000102cf.bin
78144a4416c3e7c47dd7552a1484db045a174d2aafb7addfbff234c59fa6ac3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102CF 12008 bytes

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