Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d76169b03bcd4a…

MALICIOUS

PDF

298.8 KB Created: 2021-03-17 00:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 827bf4cebefa7dd609d6d210d3f6d88c SHA-1: 09723fe98180a2e61580fef521122029cdb80f5f SHA-256: 25d76169b03bcd4a5b72e02ab1cea40039603f3634d01ad5b35f12d29d7f8665
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 0.9907

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://golowaki.ru/strik?utm_term=go+go+elite+traveller+plus+user+manual PDF link annotation
    • http://pressit.space/how_do_i_unclog_my_washing_machine_drain9dx04.pdfIn PDF document text
    • http://erogan-columbia.site/square_d_pressure_switch_instructions4xu7v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487184/normal_6041ca62b8891.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393511/normal_5ffceff53a463.pdfIn PDF document text
    • https://cdn.sqhk.co/lokabawopup/pbgehgM/xitumukoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380863/normal_604467422ef22.pdfIn PDF document text
    • http://hookup682.site/pubunigagadigiwip0ra4s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414864/normal_5ffe9d9c61ea1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370543/normal_60077a14832ee.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/rjdjcgd/lenovo_thinkpad_x1_fold_specs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387419/normal_60454a5903f2e.pdfIn PDF document text
    • http://claire-irk.ru/mechanical_engineer_in_construction_fieldtglll.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465400/normal_600f21d393018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496580/normal_5ff7ac4f59b87.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/d8N6uoL/29883922011.pdfIn PDF document text
    • http://frut-tree.site/79476839995yeui9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384050/normal_5ffae9f6176de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420767/normal_5fde60a82d024.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_3ef8eebc0160436f82396be3643fde0b.pdf?index=trueIn PDF document text
    • https://0778d94d-b67d-49c3-8f6f-43f52d6edec9.filesusr.com/ugd/b85eb0_fc4a8d52640c4002b189f2599dcae402.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb80ad9-ea7f-409d-af9d-72d21bca519e/a_world_of_ideas_machiavelli_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c55745-69b1-4a29-9d19-7a6ef661f7d2/86170199807.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_off0004579a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4579A 5232 bytes
SHA-256: 900e6fba408b3af2a59b94e5d50e8b2184846b04329c53d609c8c8db478b6538
font_01_sfnt_off0004695e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4695E 17288 bytes
SHA-256: 6da762e9f8aaf9a0cf1a063bbc5a9a5ca544909e5499a80ec906004e98583cdb

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