Malicious PDF — malware analysis report

Static analysis result for SHA-256 9264d720517a2b5a…

MALICIOUS

PDF

70.0 KB Created: 2020-11-19 10:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4c47fee463e939efc6ade1491e221f19 SHA-1: 9281eb5b26a73156715d47188bdd54873b379be9 SHA-256: 9264d720517a2b5a1247481bfe411d2f0a6cdd29f55b53fffd613eeca51d32b5
96 Risk Score

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 0.9997

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
  • 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://traffine.ru/aws?utm_term=free+format+rpgle+file+declaration PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f86fbd91b5ce.pdfIn PDF document text
    • https://togoritireso.weebly.com/uploads/1/3/4/6/134619717/5fc28074602c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401982/normal_5f99767b5b801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_5f9e71cdeb8f4.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/ee9fff79f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_5faf3b9551ff7.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.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/datarofapakil/body_system_review_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/aisd_calendar_2020-21_austin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5429f53a-9c38-4ac0-b66f-ab808f06e6e8/top_100_vocabulary_words_for_ielts_p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a27099a0-9c58-491f-b3b0-3842b4b9eb5d/8715406213.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/skype_7._59.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e2f419b-1077-4827-bce6-7f032645bb25/hoja_de_respuestas_para_examen_idanis.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_off0000d52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52B 5252 bytes
SHA-256: 9fd5a1be7492a45d94fe78a13a58fc7c1e6b0cd9a840fe5d588fe31f22096fbc
font_01_sfnt_off0000e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 10684 bytes
SHA-256: 5bc7b316edc04473e22dbb7707e895838f2e438ffca2a97fd1d4097fe7195be3