Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfff504d07a67063…

MALICIOUS

PDF

76.4 KB Created: 2020-12-17 08:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8119f9db879e4dbefdc3d9fac4f750f3 SHA-1: ed3e9687ef45f37c3d989098a24dad8a57126b72 SHA-256: bfff504d07a67063a258d0cf96c7b87a260d4e93111bb90b30621704b788ac3e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also assigned a high probability of maliciousness. The embedded URL is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/strik?utm_term=glastonbury+library+media+center In 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/99437206-e6c1-47b8-b497-1c758e1a4667/noticias_en_voz_pasiva.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/18020141265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b31b508d-c21a-4130-9690-28d20f6b761b/80801025936.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/ejercicios_teorema_bolzano_y_rolle.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc655f22bbd7406582ba233/t/5fc9e02e8d0ac92c7be539f8/1607065648594/88362947210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f99bc1b-c852-48ef-ac19-a5453c31afe3/rozobazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa570727-9313-4d1f-8b08-e24a93cbe7a0/wodokarokugerojovaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27579c5c-f016-4aff-bdc0-cf39c9ab36f0/dewinodupadikanusur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe31a23c02f22b9dd7ec39/1606300066573/66208732484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3ac943-1f96-4a8b-b4eb-da45d130db42/actividades_para_colorear_primer_gra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f3e47a9-3d25-4b7e-9b8d-6f963d5d214a/majapejo.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/hollywood_dual_audio_movies_extramovies._cc.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/btd5_hacked_unblocked_google.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD743 5356 bytes
SHA-256: 650a0a4a15186e092b44b805b44cff14dfc8dc0762779802b8acd4f3b5100ab1
font_01_sfnt_off0000e96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96C 11392 bytes
SHA-256: fa3600e8949f3e25866ae108f586fd4482604aa8402fb04af0acd26afe973f5f
font_02_sfnt_off00010f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F74 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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