Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a30297ae14f954e…

MALICIOUS

PDF

77.3 KB Created: 2021-03-21 05:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b73c5749d77d4b33533425c6d7038960 SHA-1: 7802242f3c69056c5a2fb6738b2065a4f0938482 SHA-256: 2a30297ae14f954ece59c9c30902cc9e5a0bf8f508ee42a76ab7c34491314903
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains multiple embedded URLs, with the primary one being 'https://jacksth.ru/wix?keyword=the+coaching+habit+espa%25C3%25B1ol+pdf', suggesting a phishing lure related to a book download. No scripts were extracted, but the PDF structure and embedded URIs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=the+coaching+habit+espa%25C3%25B1ol+pdf
    • http://idealsit.space/persuade_inform_entertain_sentencesxxmtx.pdf
    • http://tameeniraq.com/lemofupetamegadijwgfqt.pdf
    • http://vittorguxx.site/59854969450do5tp.pdf
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/biwivigevunani.pdf
    • http://top-agent.ru/collect_like_terms_definitionzz27u.pdf
    • https://vevikonupefafo.weebly.com/uploads/1/3/5/3/135391347/xazoxub.pdf
    • https://danonifakusore.weebly.com/uploads/1/3/1/4/131483465/gejazaviwirura.pdf
    • http://4338bacchus.com/direccion_nacional_de_loterias8svky.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2460724d-675e-4dae-baa9-978ba5c11d41/why_are_the_lights_on_my_samsung_dishwasher_flashing.pdf
    • https://uploads.strikinglycdn.com/files/841ece59-c293-4561-884f-f9c3cb6adb28/fusisojusuwafunez.pdf
    • https://c4fca8c4-0f54-45c3-ae88-320069d86c16.filesusr.com/ugd/ac0d21_ee8e8440fa6f472f8cbb89d3de849972.pdf?index=true
    • https://s3.amazonaws.com/jeromisixinolib/kudopezafazunewudut.pdf
    • https://s3.amazonaws.com/mizeteb/dewalt_dw715_blade_change.pdf
    • https://s3.amazonaws.com/tixeligufokup/logudagobudoxedoponofora.pdf
    • https://uploads.strikinglycdn.com/files/de93f630-e80b-42e7-a3cb-12533e21495b/how_to_open_a_lexus_key_fob.pdf
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_21d3c0622869410d95e9b458da5042db.pdf?index=true
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_b85d02e690e44f04bab0d67699ee909d.pdf?index=true
    • https://s3.amazonaws.com/sesafefanulokam/application_form.pdf
    • https://uploads.strikinglycdn.com/files/55c1c7c2-e3b6-49ac-b4b3-62e1469eb4ac/jazitas.pdf
    • https://s3.amazonaws.com/fatisake/backbone_marionette_tutorial.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_off0000ebc3.bin
aa31567a5814350fba01c45d1a26fa6f58b1a30028f57756daeda5c37fc5fdcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC3 5620 bytes
font_01_sfnt_off0000fe99.bin
5ee7c71099a8e53c9c885cc93bb1f5972430062b1beed13731df0885d1374075		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE99 12244 bytes

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