Malicious PDF — malware analysis report

Static analysis result for SHA-256 691b79f03219b167…

MALICIOUS

PDF

72.1 KB Created: 2020-11-21 12:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ddb55ff6d017143be0f6c1c20bd2194b SHA-1: 95491c6c1417d35c516f4cc8515af07abb9f381d SHA-256: 691b79f03219b167204c780fcb15739aeb424476a7c7c289d673e03989b33853
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 0.9967

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://trafffi.ru/aws?utm_term=internship+report+english+major PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/company_board_meeting_minutes_format.pdfIn PDF document text
    • https://s3.amazonaws.com/lanowilovuviwib/pawomeso.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/24813391021.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/73973157365.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/nijelunonimovusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06ee7b5-a4af-4561-b8d9-d382451bc466/5841331772.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/apple_developer_page_configuration_profile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee46188f-eae0-4ecd-bada-e9f980340b40/25009100690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcd0cbff-1475-4807-adeb-1774d4b69627/jovazejete.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_off0000debe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBE 5244 bytes
SHA-256: ba26075c99efd6cec212477b2b31a8c4bad3c710cc74a0520f59cfd41948741d
font_01_sfnt_off0000f06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06C 10972 bytes
SHA-256: 834a2e7a0f0171d93079fcab5a1121b86a941492cc712e17ba5d149e2487383c

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