Malicious PDF — malware analysis report

Static analysis result for SHA-256 63684d02c3520d5c…

MALICIOUS

PDF

65.5 KB Created: 2020-12-09 12:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: cd20c142c32eeebb1fa621d18a48e5cb SHA-1: dd8ca19476e38759baec0c5c4e43d69ace17516b SHA-256: 63684d02c3520d5c1af8b9b3a6ff6fe83a35981ee484c028b54689031ff6ef24
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/aws?utm_term=filipino+alphabet+worksheets PDF link annotation
    • https://zizevazemob.weebly.com/uploads/1/3/4/7/134716229/jiwesazedazuvuf.pdfIn PDF document text
    • https://zaroxirag.weebly.com/uploads/1/3/4/4/134457582/c2913019540e27.pdfIn 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/d3c4180d-5903-4f61-86bd-6a603662aba4/wuzagapovuvebetediva.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/huskar_dota_2_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2b7b54-f711-4c3a-a044-7e84809a4052/tug_the_table.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/sociology_a_level_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b15ee0d-d821-4fb4-9afa-98130c7c2212/radical_acceptance_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e897cd-3231-44f7-aec4-fe63db0000fd/comcast_chicago_channel_lineup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97453462-db13-4fd1-8cf2-9edbabb4214f/86612875534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69eaf29-81af-4045-824e-485bc8643c83/guia_para_el_examen_global_de_conocimientos_nivel_bachillerato_conamat.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/fusagabutikawuf.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/49651973157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc79c9fd-ed24-44b9-96f0-ef726c8f353f/gakuviki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc553ca11f6a41984a31074/t/5fc824aa13de6e79814f4f64/1606952106069/red_button_down_shirt_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/ghandhara_nissan_annual_report_2018.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_off0000c514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC514 5156 bytes
SHA-256: fd1003a3d6b45e743f1498a907e27060080c82812d782fcbf13d3c4e3d9bc6f0
font_01_sfnt_off0000d6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A6 10272 bytes
SHA-256: 1081cbdb11f2e45ca137a07f4e75d3f6437b1e005be7890f873803d1ee863b57

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