Malicious PDF — malware analysis report

Static analysis result for SHA-256 905dd93d24ae0ac1…

MALICIOUS

PDF

69.4 KB Created: 2021-03-24 11:17:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 81aa21789188623d8265dc260a313635 SHA-1: 57555c14aa33dafe1a22916eff23b8e4531ff6e2 SHA-256: 905dd93d24ae0ac1786d3a2b4a4825c9826612384b8c5d663cef26d42e43a887
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 0.9998

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://dafemum.ru/wix?keyword=cst+berger+20x+manual PDF link annotation
    • http://reabook.online/866614378050vbhx.pdfIn PDF document text
    • http://halfraire.xyz/57044612495gynt7.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/bjdhajj/figimimot.pdfIn PDF document text
    • https://cdn.sqhk.co/gasawivu/cgeKihQ/39067059197.pdfIn PDF document text
    • http://werewov.22web.org/zetak.pdfIn PDF document text
    • http://govnosiakxws.online/gumixemga25.pdfIn PDF document text
    • http://songkfrk.site/bugaboo_cameleon_1_user_guidewt7xo.pdfIn PDF document text
    • http://specrazreshenie.com/reguwovakuwozokivekipon6eva6.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/magapeguwabe/2800440137.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/vuvojolodaxelovuzogusaxod.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/xuretomeketofaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/3577735481.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/complaints_procedure_template_solicitors.pdfIn PDF document text
    • http://pamubaj.epizy.com/azhage_azhage_album_song_cut_video.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_off0000d271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD271 5392 bytes
SHA-256: 6c8ad38d2681b25f284815607d547021fc7f815a69771cc7e6fb0067ae34b7a3
font_01_sfnt_off0000e4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B0 10428 bytes
SHA-256: 8da19a54d91b034a021bdccebc28cbfd57cac58cfe6bb712923e110f7198d03c