Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f778d2859bdf79…

MALICIOUS

PDF

114.6 KB Created: 2021-03-31 06:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 683dda516883e76d0cc011f6dd27672c SHA-1: 537c4f5cf62339e48d1b2294a7a567201f9c456c SHA-256: 54f778d2859bdf792096150a317f10a26aba1c85668a7ac8e9f759f8b96f2770
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/123?utm_term=formal+letter+format+class+12 PDF link annotation
    • https://cdn.sqhk.co/bivuwusim/QnVwgev/kikizexukofapudu.pdfIn PDF document text
    • https://cdn.sqhk.co/pebekaja/6hhEyid/35668923779.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/gkFje1u/62807327618.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/javascript_blob.pdfIn PDF document text
    • http://zesepajokab.22web.org/97145286197.pdfIn PDF document text
    • https://cdn.sqhk.co/rubuxupab/0jdpH88/forbidden_lands_mapa.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/NnghAa0/sazixezomonugetegogugibog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://logelevuj.rf.gd/99928063223.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/best_journal_for_daily_journaling.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/free_guided_meditation_script_for_healing.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/kapuseseg.pdfIn PDF document text
    • http://sugosabogakeg.rf.gd/panera_bread_menu_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/wototusolabidisoxatek.pdfIn PDF document text
    • http://wawaxibog.rf.gd/ejercicios_movimiento_rectilineo_uniforme_2o_eso.pdfIn PDF document text
    • http://linakagiwabofa.epizy.com/alumni_registration_form_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/clothes_and_colour_worksheet.pdfIn PDF document text
    • http://wisakixatepifu.epizy.com/dedusifewimebezimapep.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/47035023613.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/how_much_do_you_make_at_kindercare.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/89701782269.pdfIn PDF document text
    • http://purezaviwof.myartsonline.com/mabunusuv.pdfIn PDF document text
    • http://wubifut.rf.gd/kefebararexirutikute.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FA2 5164 bytes
SHA-256: 6d6641f040b4252c80c97ada212621b931f4ed524e2d61e0b95be7445614ee90
font_01_sfnt_off00018120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18120 11316 bytes
SHA-256: 313be16121404cc248bcb0e3a47d8d2de1715ac5ee6bb5d4e5709122ff9dc851
font_02_sfnt_off0001a795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A795 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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