Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab04256c21b5ce8f…

MALICIOUS

PDF

73.5 KB Created: 2021-03-22 07:23:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 152032056ead3daaedc219c2e7a752a1 SHA-1: 652339e379ee7d5f34854a1e52b37dc096e405b2 SHA-256: ab04256c21b5ce8f5c9efbb19a39a3f90750f742113bbdca8cf7ee268ab09140
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 disguised as a manual for a sprinkler timer. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of an external URI points to a potential download or redirection to a malicious 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://druttle.ru/wix?keyword=rain+bird+sprinkler+timer+isa+304+manual PDF link annotation
    • http://duzegotola.medianewsonline.com/cuadro_medico_asisa_almeria_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424376/normal_5fd2eb5006e23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407318/normal_5ff05d2df3834.pdfIn PDF document text
    • http://memimusisat.getenjoyment.net/turbochef_fire_pizza_oven_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391037/normal_5fe5edbfae99a.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/ponenosusanekamaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485942/normal_602b50b9dfd72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424637/normal_5fcb102185b9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/37827215-e471-4bf8-848c-1bd9975f2cb4/11686255142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1251250-a690-4e1e-9247-ab261fa77e0b/wiziwemidonojojabeluk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5261950-3c29-4d21-8b72-ccfd3e4b0564/les_miserables_victor_hugo_first_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfce4bcc-43f4-4436-be12-44ba4abe8b44/sevixatakakusemaromos.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/babefak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7f6eab1-650e-4d37-93c2-fc51531f1a3d/derejogepotixatiluju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f56a18-2494-4cdf-ac2d-bc6198a2e830/70847557149.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/ragnarok_renewal_swordsman_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64bec330-c584-44cb-b8eb-f4ded5dd59fe/how_to_program_rca_rcr414bhe_4-device_universal_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/piwotajuvobid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fd006af-507c-4c59-80d1-a9bcf2049d24/hp_deskjet_2541_cartridge_installation.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_off0000e1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 5712 bytes
SHA-256: 2fdc6c579e48cb896f2bb88177166af08d60c64a844d15402810166edcb45b18
font_01_sfnt_off0000f51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51B 10492 bytes
SHA-256: dd5b5375f917a7275ffecc8fb4c94ff222d3aeec481f97e126dfd4f6ab041071

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