Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b968d40f7c33dcc…

MALICIOUS

PDF

75.9 KB Created: 2021-02-16 08:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5ad19658fdaef9dc88168b6e513250e6 SHA-1: ed8ce9983e72887af7affe5e5c6951fac2e653bd SHA-256: 9b968d40f7c33dcc18b224afdb779fdd0eeceeb2fddf620581a10b5a8ef77c65
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URLs suggest a phishing or credential harvesting attempt, likely by luring the user to download further malicious content or visit a compromised site. No scripts were extracted, but the presence of numerous external URLs indicates a strong intent to redirect the user to malicious infrastructure.

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://jottigo.ru/wb?keyword=d&d%205th%20edition%20dm%20screen PDF link annotation
    • http://sungo1.space/bivapetid70grk.pdfIn PDF document text
    • https://jumufewaxijakuk.weebly.com/uploads/1/3/1/3/131380308/kukademomatib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_5fd08b2c7f259.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5ff0c8cb4416a.pdfIn PDF document text
    • https://resafuki.weebly.com/uploads/1/3/1/3/131398359/1393107.pdfIn PDF document text
    • https://mefivezetu.weebly.com/uploads/1/3/2/6/132681021/690476823afa8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480187/normal_5fd058393308d.pdfIn PDF document text
    • http://metazoaapc.fun/best_year_for_browning_auto_5ez4h2.pdfIn PDF document text
    • http://ehaberdevlet.com/bmcc_library_contact43pjb.pdfIn PDF document text
    • http://manaluw.iblogger.org/6040231367.pdfIn PDF document text
    • http://hook-up.fun/basic_electronics_objective_type_questions_and_answersdii6p.pdfIn PDF document text
    • https://gegixigozazewit.weebly.com/uploads/1/3/4/8/134858275/gokororumexowavigi.pdfIn PDF document text
    • http://alphabitx.com/zujeniguvusvwhk.pdfIn PDF document text
    • http://stankoff.org/delta_math_answers_geometryjho23.pdfIn PDF document text
    • http://noksipals.online/geological_time_scale_of_earthjjm17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463538/normal_5fce820be1a4f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF135 4156 bytes
SHA-256: d9d9eb8b5a67a8494ca5a9593d54773c41ba913a17cb426b52e0a193c0b11448
font_01_sfnt_off0000ff63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF63 10348 bytes
SHA-256: e61a2e64c3c407fd760a4d12af826cc2642454f4c427eb45ebe210e08e91a830

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