Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4c8be32ecd7797…

MALICIOUS

PDF

75.5 KB Created: 2021-05-29 08:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 00037d562f7700a03471345aa5d0f05d SHA-1: 9196ff9f140b1f8a276ec0c8975b4f8ee9a2a88e SHA-256: ed4c8be32ecd779765c72c5bc6fbb30658f58d79b1d55a5eed1b2afe00a568ad
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 0.9996

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://leonvi.ru/123?utm_term=the+apostolic+church+hymn+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385216/normal_605cb0e3b0dfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470521/normal_6043937e1fd23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427094/normal_5ff994776caf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_60325bee0d796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5ff42e9d54592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458840/normal_601867712622e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443799/normal_601cebc37d3a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_5fdaf46d1d2fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425533/normal_60167f642be52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416928/normal_60181cb1367b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461767/normal_5fe16fec524da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450639/normal_600d96ab7ce4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419623/normal_6009a10039fcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_60407c9bb6812.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369930/normal_6007245eb191e.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/572f8520-e09b-4827-a41b-780c90387774/why_is_my_camera_not_working_on_lenovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4810e3f3-9f1f-4f04-83eb-47e0ba5a220b/rutovolisejujuxip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/559d2989-88f5-4d4b-8e28-78a2a4eab52f/world_map_with_latitude_and_longitude_and_cities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697c51d4-e77e-4a29-b788-1fdd84418051/how_to_set_time_on_marvel_accutime_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ac9bdb-45c7-4eca-8dfd-d3ac9bba8c75/formato_de_acta_constitutiva_de_sociedad_de_responsabilidad_limitada_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10d330f-7771-481e-8ece-88bdd2d254c4/maytag_centennial_dryer_specifications.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_off0000e555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE555 5648 bytes
SHA-256: 183f224cb4b5a1f6e596d8633b068524c37654c695baf1d5f36c1723ea4172d7
font_01_sfnt_off0000f863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF863 12176 bytes
SHA-256: 9cc761462808114139aa20719fc51bffa75da6d95cea5d859c0705a8e2b13287

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