Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49b03fd62dc8ccb…

MALICIOUS

PDF

74.0 KB Created: 2021-02-02 11:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 297e71b863930162622c91cdc02c63b7 SHA-1: 690edc7e5849db666ecadf7a8f8777787d07629f SHA-256: f49b03fd62dc8ccb3b72371e7659073478b24a5892a932d89bac3f8ce8b3ccdb
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search result for a game-related term, likely to trick users into clicking it. The PDF structure itself contains obfuscated content, and while no explicit scripts were extracted, the presence of embedded URLs and the overall detection suggest it's designed to lead the user to a malicious site, potentially for phishing or malware delivery.

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://seumenha.ru/wb?keyword=auto%20keyboard%20presser%20for%20roblox%20free PDF link annotation
    • http://naturaitalia.space/98037046044f1x02.pdfIn PDF document text
    • http://hookup668.site/treatise_on_invertebrate_paleontologyefdwn.pdfIn PDF document text
    • http://creditstar-kabinet.com/certificate_of_origin_of_the_peoples_republic_of_china2h6uv.pdfIn PDF document text
    • http://zabavnyi-slon.ru/64770183559p6r4r.pdfIn PDF document text
    • http://uablog.site/ali_ali_mola_farhan_ali_waris_lyricsi89hu.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/befafuni/application_form_for_job_apply_format.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/birosatuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/sentencing_council_guidelines_arson.pdfIn PDF document text
    • http://zowiseli.epizy.com/53866999622.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/metaphysics_aristotle_free.pdfIn PDF document text
    • http://sivigowukom.epizy.com/audit_procedures_for_accounts_receivable.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/aeroplane_photo_editor_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/56307652492.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/algebra_2_module_6_test_answers.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_off0000e44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44E 5396 bytes
SHA-256: b1169d4129801622f41f58c1d03e7082049872d42e305bc253ee33a1ae8a4077
font_01_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 10656 bytes
SHA-256: eb14e4bd04623fd5bcb1e35db75df43e2b9636738d915fa6460511cc39821730

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