Malicious PDF — malware analysis report

Static analysis result for SHA-256 725ac5321e82f204…

MALICIOUS

PDF

68.6 KB Created: 2021-02-13 01:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7861ca5f9a542c5582e28d4862a14f33 SHA-1: 5a3e2483a9353eabfd7903180c2774d2e4709111 SHA-256: 725ac5321e82f204a4ddfb005059f687788ba4531d4f5ce229d03ba24e0ade97
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://seumenha.ru/wix?keyword=malgudi+days+pdf+in+hindi PDF link annotation
    • https://cdn.sqhk.co/rutunidosaw/cggweal/93563232878.pdfIn PDF document text
    • https://nivikaxixigimom.weebly.com/uploads/1/3/5/3/135322477/a66854816a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5fd627a69b642.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/Gic0ijX/blocky_zombie_survival_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/penuvipaw/VhcKPgh/86703528888.pdfIn PDF document text
    • https://laxivaxof.weebly.com/uploads/1/3/0/8/130874385/5336051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_601b46b625d21.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rimepusox/89387230457.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/android_folder_file_path.pdfIn PDF document text
    • http://didaduxazej.epizy.com/49242163374.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/bully_anniversary_edition_apk_mod_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC578 4888 bytes
SHA-256: d80f434556146ee980723d20d9e2ca1496e49976ff0ea8e0ffab6eb21a8efa50
font_01_sfnt_off0000d60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60F 9936 bytes
SHA-256: bc1fadd8fa3e6ae9883fc2a19fba831a1800cbc3dc9442b84856e1217c6273d5
font_02_sfnt_off0000f815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF815 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2