Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4bef8cda772fe1…

MALICIOUS

PDF

85.4 KB Created: 2021-05-21 12:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d825f1e8149220a124adbbf43321d5b9 SHA-1: f0919e69c934936fb2480d93e3270dbe8dd21bbe SHA-256: 5d4bef8cda772fe1bb3982f01c514b4bbf8974cba4528c814b22ab774926bfc0
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 0.9993

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://soxebez.ru/strik?utm_term=how+to+cheat+on+iready+diagnostic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379370/normal_6032a0b1d29c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447877/normal_606039483c343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481285/normal_5ffac095a8335.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370087/normal_6001e41d807c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_601b2d876660a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489263/normal_60503835721bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_604e0554060cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375076/normal_600674a45b78f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449417/normal_60591cc5eed30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416154/normal_606ca8d32ad26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455376/normal_602aea414e827.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/808ba67f-b896-4c6c-9041-2b98040d9b83/windows_10_for_dummies_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e2a7f1-7baa-4d36-a046-089c0f6b40c3/javascript_set_absolute_position.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/93828142423.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/how_many_covid_19_in_el_paso_today.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/lipurovilofanijavuz.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/nusifelojovazefebubi.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/harry_boniface_prabhu_information_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/what_are_the_height_requirements_to_be_a_navy_seal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e3c0644-5035-4bf0-aab1-2be0c629a150/wario_land_super_mario_land_3_dx_rom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261211cb-8e9d-4bcf-a638-5be3ae7a18de/69027943022.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/billardtisch_selber_bauen.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/budget_2019_expenditure_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c4f6b1-615d-49c0-91c8-5601e3292991/plantronics_cs530_earpiece_replacement.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_off00010f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7C 5324 bytes
SHA-256: c4892e957cf66a6b71f515571e52e1fd72f12f813cb5819cb9c1f1bfe6cf0eda
font_01_sfnt_off000121a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A8 11572 bytes
SHA-256: 2962a9513cc39dfb90f58109909867e22019be39bcdc9f72753d3aca9603b7b7

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