Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5851f0f9c49fa03…

MALICIOUS

PDF

76.0 KB Created: 2021-03-18 07:15:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cf36dd98864f7edc7f28061acbce6513 SHA-1: 9a347134c22965de16e0fcbab8f9970ca6f075ed SHA-256: f5851f0f9c49fa038a2847754212688562cb81ab1fc40890d0f3437ef6e56843
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely serving as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=will+there+be+a+second+season+of+witcher+on+netflix PDF link annotation
    • https://cdn.sqhk.co/rekewuneboxu/chbFlhb/robon.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwexosul/jUMACf2/write_over_online_free.pdfIn PDF document text
    • http://letabumo.getenjoyment.net/calendario_2020_con_feriados.pdfIn PDF document text
    • https://cdn.sqhk.co/monazaxumol/SigwUFq/new_hd_wallpaper_the_pretty_billie_eilish.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/MhbgcS6/soccer_star_2018_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/hhigyjh/custom_led_xbox_controller.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxazigozo/hgd1Tfa/ashraf_ali_gadar_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/ghhehhc/ping_pong_games_unblocked.pdfIn PDF document text
    • http://kivolugog.mypressonline.com/back_titration_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/jaiajbo/8752884330.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/f95icm7/75719053790.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/0pb2803/yandex_translate_api_android_example.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/plugin_adblock_chrome_android.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/jamie_cullum_but_for_now.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/92305024310.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/nadra_b_form_tracking_id.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/875366852.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/aladdin_game_for_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/soulseek_qt_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_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 5420 bytes
SHA-256: 3b0cef22c6789a7f3312359d042d0cac35c47dfae8a6786968e24906ea6dd6e3
font_01_sfnt_off0000fa56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA56 11764 bytes
SHA-256: 7d7ff735fd26f80f100623e29d5bb87af1ae2056eefc0955871a04f718074153

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