Malicious PDF — malware analysis report

Static analysis result for SHA-256 e311167ab562bbbd…

MALICIOUS

PDF

67.1 KB Created: 2020-11-23 06:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7f752146d7513276ec133a18702cb789 SHA-1: 5a00859161808798bfdb32f1b0b19a89a0fc2f42 SHA-256: e311167ab562bbbd71721adad6513e2479e5418f372e017ebd96f40f73f768d9
96 Risk Score

Malware Insights

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

The PDF file contains a URL that redirects to a malicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to trick the user into visiting a harmful site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/123?utm_term=lord+edgware+dies+audiobook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368265/normal_5f89ed8961132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_5fa4d8f85a8d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f8f9d5e6a578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e577d7-7427-44b5-85d1-6f2970fc40a8/examen_de_matematicas_para_sexto_ao_de_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf59a67-fc10-4e82-8c8d-177119428b6c/28720806092.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/minority_report_glass_gif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5cca793-6f55-47d7-9db3-69e4f3a4f9d0/67591046378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f226d60-bbb1-48c8-a949-336eba566379/xidenewamefax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/927b0b9f-85fc-4124-8cbb-cba161ac86d1/50673092112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad7158f-36e6-4e7b-8322-08da2498fda2/cox_channel_lineup_phoenix_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15845434-4c1b-4c13-ab80-3345b61415d2/linda_bradford_raschke.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3EC 5200 bytes
SHA-256: 72b614d1c7b29ef58cabdb6efa06296fd67c93569349b0d6f77111730789a12a
font_01_sfnt_off0000c5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BD 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000d120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 10128 bytes
SHA-256: 581d33a630de0e5cc1770b40522fe858ebaceeb278d0f1ab0953fe3e0a8179fc
font_03_sfnt_off0000f3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CE 2908 bytes
SHA-256: b67da6493f3b12e6ef142429c9e520bc410fe517df368f1f20e5da800fda5567

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