Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0db743f857df63…

MALICIOUS

PDF

72.5 KB Created: 2021-02-20 17:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c69e50d4d1742c4ac526cffb05d2556c SHA-1: f6637cf6a80744a17e19779934e825a2b65a547c SHA-256: 6a0db743f857df63fad04467fd4f57769a87f61ae50fa380dec67b813629a266
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest an attempt to deliver a malicious payload or redirect the user to 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://maypoin.ru/aws?utm_term=where+does+the+word+mutt+come+from PDF link annotation
    • http://about-central.com/compound_subject_and_compound_verb_worksheetsjffm6.pdfIn PDF document text
    • http://manthoughtswebsite.website/10611681435t8juj.pdfIn PDF document text
    • http://profaudit32.ru/apk_4gb_ram_booster_pro_v1._2mt5m9.pdfIn PDF document text
    • http://kimujitotam.22web.org/the_basketball_diaries_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/pometobab/g95gc8G/metaphysics_books_barnes_and_noble.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/brawl_stars_hile_apk_indir_oyun_clubb69rh.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/hbn8iaV/wormate._io_hack_download_apk.pdfIn PDF document text
    • http://best-ital.fun/aqeedah_tahawiyyahl823v.pdfIn PDF document text
    • https://cdn.sqhk.co/lezubenewago/rhjLQNE/pandemic_warrior_level_38.pdfIn PDF document text
    • http://koreanluxe.com/mepis3gml6.pdfIn PDF document text
    • http://ing-cliente.com/ravugidoboopppe.pdfIn PDF document text
    • http://20970907.net/rescue_mission_bargain_center_macon_gag2blq.pdfIn PDF document text
    • http://yoga-fitness.space/antimicrobial_properties_of_allicin_from_garlicy6btg.pdfIn PDF document text
    • http://zoomita.fun/pink_beautician_uniform3us89.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/kovozenamofox/seresadikirezawebuvabonum.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/zunozotupunibolek.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/harvard_referencing_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/internship_civil_engineering_report.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_off0000de0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0B 5124 bytes
SHA-256: 8876a1e75800b3192a744b037dff34c61aa8cff29d1e685fe34c35621893377f
font_01_sfnt_off0000ef6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6C 10980 bytes
SHA-256: 7063c4c4465a3c3c8b4425d299cf28e272b6819ecf333f930b93c065dcda75ad