Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d10823db177d321…

MALICIOUS

PDF

96.7 KB Created: 2021-05-31 06:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 884dd9769031e7a2d572754b92f05d41 SHA-1: 5a282e62e2ea1086b2b9aaaa63c50a2b13e906f9 SHA-256: 4d10823db177d321a4dd220d52634cf85c2fe06a80dfe2198ad321b9942396a4
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 0.9983

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://gimoguvi.ru/strik?utm_term=what+is+the+sound+id+for+faded+in+roblox PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4480387/normal_60b40ef4d9aac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476601/normal_60635bfec38ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414357/normal_5ff25202d4405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_605c1deada2aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487897/normal_5fe0b3af85360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_6052c1916b62c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_600fce09407bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_6021aa78bf939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446155/normal_606c6f86e3439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_60222120749ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_605d4d1dd5c7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495265/normal_603b174168cce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_6024843d17d8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_605b7fc54e57a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483362/normal_5ff8ad2767ee3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed7572c-3f8d-4950-a878-cfe2a840d7fe/ejemplos_de_divisiones_exactas_e_inexactas_para_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e12dfbe-f80c-4428-af50-7402e558c040/lemony_snicket_who_could_that_be_at_this_hour_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13607a76-fbac-4b35-9c28-2793deed740c/what_is_the_purpose_of_tom_bombadil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d59bcf-de66-478d-8b55-26cbf2990698/punching_shear_calculation_steel_plate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ded95c3-11a1-4798-8baa-8b1dc277cb18/32345000156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ac46909-ee3d-446d-b034-d0d68eaa5d63/books_for_8_year_old_boy_advance_reader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bb06294-1927-4477-bee1-3356887c7b2d/xoruwutepek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7195649-3a64-4afa-b822-5e2735ec3278/le_mythe_de_sisyphe_albert_camus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C5 4068 bytes
SHA-256: 35a8cae18ba4ce6e36017e5eba1a8352c445bed5b1e91b4093bacfd9d51ea304
font_01_sfnt_off00012166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12166 5216 bytes
SHA-256: b0bd94d7ee406b377753f047d87c0b230cf4c3acb84283c3355d5c1ebc89a571
font_02_sfnt_off0001332c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1332C 11988 bytes
SHA-256: bb9d348ff99090fc1c0d2d87b783960ca3dfc6b5b93913c34360e45da87d895c
font_03_sfnt_off00015c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C94 16876 bytes
SHA-256: 4e53a9d5a1079d38307f437bb8af37a9a7f252652cc8e4209d25e372a1112adc

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