Malicious PDF — malware analysis report

Static analysis result for SHA-256 47320cf064ecbb13…

MALICIOUS

PDF

83.5 KB Created: 2021-03-10 18:12:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f3da44d417ea5c240a070dba3e90937c SHA-1: e913744f1abbdf5c78e097cce6ebbc4ceeafea01 SHA-256: 47320cf064ecbb130ecbc4b5e2ac8422d5eafe16ba3c6298e8fdd37aaff85268
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL, https://midufefew.ru/strik?utm_term=reality+transurfing+book+pdf, is the primary indicator of malicious intent, likely leading to a phishing page or further malware. No scripts were extracted, but the PDF structure and URL suggest a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/strik?utm_term=reality+transurfing+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5fc818ac540f3.pdfIn PDF document text
    • http://risumeboze.getenjoyment.net/manual_de_la_camara_sony_cyber-shot_7.2_mega_pixels.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417308/normal_5fc688e455b43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403560/normal_5fdf2b7ecdb7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5fe31f0ae4b47.pdfIn PDF document text
    • http://kirudikegopoded.sportsontheweb.net/azar_blue_grammar_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389599/normal_5feefa097b204.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e8492361-05a2-4b43-a378-ed49fdab5f5b/47913564601.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/chemistry_test_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/79188854955.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/71897092384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00779103-a8fc-4d6a-8cce-2fa83b9402bb/93140790372.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/deveseba.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/easy_cubism_art_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c31ac5-20f5-4f26-8039-2ab34a71a572/char_broil_air_fryer_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/pujagujurafumoz.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/salogimiwinagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca1bd5f-0944-458e-9499-1da3cb74e7a1/busufowitoti.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/south_florida_inshore_fishing_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992fd298-2e5b-4379-92f3-c46436c51209/how_to_teach_the_five_senses.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CB 5404 bytes
SHA-256: 29543ad08b6828d0b01334efedc27dd85be36249a3f912cc1d94f8e2a95ee7ed
font_01_sfnt_off00010c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3D 11324 bytes
SHA-256: da9594d9f77fc82fb2e4dad7182132312f90e968cfd445ad37fe004bed837e94
font_02_sfnt_off0001326d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1326D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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