Malicious PDF — malware analysis report

Static analysis result for SHA-256 1959f5b9fc099c47…

MALICIOUS

PDF

75.4 KB Created: 2021-05-22 22:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c69b3b786e20b6536478ef2ea46806e8 SHA-1: ac2b739e5eeefa339c5a9b1ead06ba840f6e18a7 SHA-256: 1959f5b9fc099c476bd70b943fe6df4f9b71b89a4c45738cd0bbf067a9c4e93c
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 0.9992

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://jumiwimov.ru/strik?utm_term=exercices+maths+ce2+comparer+les+nombres PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411480/normal_6047e94fd6b5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454813/normal_6052f3edacb58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379487/normal_5fdf1448f244b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_60209a57ac171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_606bf64eb9678.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/66487c69-6099-4d1c-985a-fb7944681fdb/dance_hits_80s_and_90s_remix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1f875b-91f0-4819-aa1e-1b9efcea2812/8873569739.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/object_pronouns_worksheets_for_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cb6adb1-5bc5-4bea-bc49-1ce7438f8380/kathy_lee_gifford_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595cd9eb-8d84-4e37-8a5a-ef6421ca8951/xajudubaxapiji.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/boating_license_test_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/gdevelop_5_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c951c1f-e8da-46b7-b14c-8325f6f8f630/how_to_install_autocad_electrical_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/lufowipejiwisarotupisowix.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/megadimension_neptunia_viir_true_ending_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/86185878651.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/php_isset_array_key_exists_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/23159129532.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/47235223800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2362eeb-9a70-420a-9755-aaecd7a1d286/wixajulirikasavusop.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/cracking_the_code_of_life_video_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30056e3-0b79-4a1b-90b4-4b6eb6e08d3b/29378975032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087aacb3-8406-4371-84b9-cc8a5d0379c0/rujasi.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_off0000e399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE399 5468 bytes
SHA-256: af2bcb0874fbd05f5e522f945b23d5ca1b81860a0735b2db83980c605d840868
font_01_sfnt_off0000f60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60B 12344 bytes
SHA-256: dbc66d76d1a9541a49a55ac4c2fa6c16f71ef4e7cf7e693f0e139ec8625bf2e7

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