Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4c7bc97f92f5110…

MALICIOUS

PDF

78.3 KB Created: 2021-03-25 22:09:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bf42f87cbfd1eab1273dc8066a0136c4 SHA-1: 500742ddb40f43327f6dbfc97316a2922bbaf677 SHA-256: a4c7bc97f92f5110c80ba7b92498ac1fb6090490016d459880ca2c6011b68d68
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 0.9998

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=acer+-+15.6+chromebook+-+intel+celeron+-+4gb+memory PDF link annotation
    • https://cdn.sqhk.co/senuziker/ja4Dkgd/lighthouse_movie_poster_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzojivemepe/hgVWfib/guideone_specialty_mutual_insurance_company.pdfIn PDF document text
    • https://cdn.sqhk.co/xosuridasago/whfHJfT/silugobiwigulemuzinebura.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/RgjHgeb/80967730127.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/rhhvIii/doomer_talking_to_girl_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/jcibgcV/83348198310.pdfIn PDF document text
    • https://cdn.sqhk.co/jelazeneno/2ijidgS/best_note_taking_app_ipad_pro_2019.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/105b9bd7-9b4b-4b24-b6af-6bf8a1ffad32/does_dominos_have_gluten_free_wings.pdfIn PDF document text
    • http://dodujorumapide.epizy.com/95388068761.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/new_acs_guidelines_for_mammography_screening.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5adc70ce-91c4-4c4d-847d-00da284006ca/what_are_the_5_major_biomes.pdfIn PDF document text
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_f7b07f1c2a46452985666017ee389768.pdf?index=trueIn PDF document text
    • https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_26b9ec3034794a15ae08bbe4312c9950.pdf?index=trueIn PDF document text
    • http://jokabaj.epizy.com/platform_toolset_v120_vs_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476c3d8b-7be9-4101-b141-fb7138e4b899/1984_part_3_chapter_4_discussion_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/cucumber_extent_report_jenkins.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/bogojurubovalijorafazunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ac16c2-3ad7-41eb-b6d5-d7277ac31386/samsung_55_inch_tv_wall_mount_walmart.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E5 5600 bytes
SHA-256: 65631fa08bb803cdf3d9a7ae515ea08856d7ce2ee35b8c82d06ed9bb5b30caab
font_01_sfnt_off0000f8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F8 15612 bytes
SHA-256: 417de968907cce697d9fc0bbb2b610e15969a1fe0bf02b2f670429e51654a381

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