Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2efdf8ebfdfbf9…

MALICIOUS

PDF

78.7 KB Created: 2021-05-22 06:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ec5d6dd60c8a10116d3678ad8c7f431c SHA-1: 5dcb3e585c154cdee764a0ab2d266a284fdad266 SHA-256: 4e2efdf8ebfdfbf9deb989175c4d011b3b7608186ea76bdc5d181c8d905549c6
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a link disguised as a movie download. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL points to a suspicious domain, likely serving a malicious payload or redirecting to a phishing site.

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://kuzutuzo.ru/strik?utm_term=aquamarine+full+movie+hd+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393483/normal_60357856e46ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_5fd7ce54233f9.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://s3.amazonaws.com/jukezeluf/simple_electronics_projects_for_bca_students.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/acr_nuclear_medicine_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/whirlpool_refrigerator_customer_care_number_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/bitcoin_wallet_apkmonk.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/email_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/what_is_the_best_42_riding_lawn_mower.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/sociology_class_12_cbse_book.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/alto_sax_jazz_scales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73a6b8d9-3a6f-43d8-837c-6d4e715ee37a/24003676856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d237f2-42fe-4e04-8028-eaadb38fe03f/how_to_write_yes_sir_in_a_sentence.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/66545503598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbde00f3-f42a-440d-8b6d-586fd2facdf8/jagikope.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/creative_portfolio_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/rimesolebeji.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/abstract_test_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/28552350504.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/vefusajekoridajabu.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_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 5040 bytes
SHA-256: 6e45533ed486be1e3487ccd2f51a3170cc8ddbd058dd006f4d629364c0efa550
font_01_sfnt_off0000fa88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA88 10732 bytes
SHA-256: 9ca651bd8e745ec197d23ca5abff2a7b8625be59970886b932f276ba122eb29b
font_02_sfnt_off00011f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F18 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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