Malicious PDF — malware analysis report

Static analysis result for SHA-256 89502e99ab9e3ab1…

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 23:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c450892972f25fc03cc52d1551f12503 SHA-1: d412699aa97da4d803d48237b108438ba1bda007 SHA-256: 89502e99ab9e3ab1784afbfa00946d0bb3946053c47ec6ef59481a3ec597463d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The ML classifier and ClamAV both flagged this file as malicious, indicating a phishing or trojan-like behavior. The embedded URL likely leads to a malicious site designed to exploit the user, possibly for credential harvesting or further malware delivery.

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://pelibifir.ru/wix?keyword=rethink+your+drink+science+fair+project+results PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402478/normal_6039c3c156754.pdfIn PDF document text
    • https://bosuditibopo.weebly.com/uploads/1/3/2/7/132740628/565bb14.pdfIn PDF document text
    • http://nidomamedop.22web.org/woxexagagisopabodofude.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_6017ced7119c4.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/pabowojiwofuvobage.pdfIn PDF document text
    • http://finipupote.mywebcommunity.org/how_long_does_it_take_to_study_medicine_in_spain.pdfIn PDF document text
    • http://mosomupusafebin.medianewsonline.com/gepalemapifofuzogid.pdfIn PDF document text
    • https://xakowuval.weebly.com/uploads/1/3/5/3/135316831/f7fa260eef406.pdfIn PDF document text
    • https://ranibifuvif.weebly.com/uploads/1/3/1/3/131381542/saxogokex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424689/normal_5ffe160c2ef1c.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/how_to_tie_a_knot_in_a_skipping_rope.pdfIn PDF document text
    • http://navelina.iblogger.org/which_chart_for_time_based_data.pdfIn PDF document text
    • https://wajifisawebe.weebly.com/uploads/1/3/4/4/134480175/libogawo-xedisarij-fasupit-futudu.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/is_the_kaplan_gre_prep_course_worth_it.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zomumadunita.rf.gd/maxogurumexarazapipaza.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/29512705796.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/60232981930.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/70790542270.pdfIn PDF document text
    • http://begilokikilox.rf.gd/42069129023.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/98721253885.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_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 5492 bytes
SHA-256: 0996e143df65b0c4b460c1d789f81cc8f65263accc1c9c9e3f92aab015a0ea60
font_01_sfnt_off0001007d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 10084 bytes
SHA-256: 16532f126b2471a038bb70968951a72cd82189175125bda5aec60b0b24569f4f

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