Malicious PDF — malware analysis report

Static analysis result for SHA-256 51bc4d1e4be1800b…

MALICIOUS

PDF

78.1 KB Created: 2021-03-08 19:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d943a1b63847ee25dcd553c26dd0a912 SHA-1: e931e0e08f9c78e13d3711f52f514d888383fad9 SHA-256: 51bc4d1e4be1800b8770ea8c27f06b9017277f8c4c354ee451af9efd29407945
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://soxebez.ru/wix?keyword=hey+nonny+nonny+shakespeare', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded content suggest it's designed to trick users into visiting this external link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/wix?keyword=hey+nonny+nonny+shakespeare PDF link annotation
    • https://cdn.sqhk.co/gejupajo/dwgcgef/ice_cream_truck_music_hello_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/iagiD64/super_pixel_heroes_mod_apk_latest_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414166/normal_6006cb6239b86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376601/normal_5fdf6732800c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422906/normal_6017c6965b0c9.pdfIn PDF document text
    • http://sesizuxewewax.mygamesonline.org/jaboledobixifigeturozibex.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/gdheWgj/85465362845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_600f75823caf3.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/toyota_camry_se_2019_for_sale.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/lilip.pdfIn PDF document text
    • http://paselon.getenjoyment.net/puwabufugilopuzederarawiv.pdfIn PDF document text
    • http://bamitizelomodil.22web.org/best_in_ground_basketball_hoop_2018.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/betefowubevat/formation_alternance_lyon_informatique.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/60863778949.pdfIn PDF document text
    • http://varosuvavim.epizy.com/blood_and_thunder_hampton_sides.pdfIn PDF document text
    • http://lozomemogu.rf.gd/how_do_you_program_a_harbor_breeze_remote_a25_tx013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b278f2c-0b2b-4c55-9d12-5c4467b3ac92/repudaxowanuwudajefu.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/how_to_start_a_film_pitch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fb784e8-dd4d-45a1-af71-0b3e68a6b221/12324734507.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/concerto_in_a_minor_accolay_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc3bab6-c9da-4147-9ec5-bb5d361e0de5/mofisijevujoguv.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/88722648737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02da4803-b82a-4c5e-a76d-67e11286ddf4/programming_comcast_remote_for_tcl_tv.pdfIn PDF document text
    • http://kagokonutuvep.epizy.com/age_of_empires_3_full_mac.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_off0000f6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FF 5000 bytes
SHA-256: d6876d6f0587d9ab2ca0addaae673c490e9e3045d00a64f1653ba73d0f26989d
font_01_sfnt_off00010802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10802 10240 bytes
SHA-256: 36e6d490d311123d99f77f84cac6bc2faf4f351dbce5d5bcc06759b77afaa938

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