Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e453cbd8b8db86…

MALICIOUS

PDF

85.6 KB Created: 2021-03-24 01:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4aa2b5b64706ff7a172c8768f121e704 SHA-1: 52d88e6ed66d697978f75fc4c04574e4862a3906 SHA-256: 63e453cbd8b8db867f33555a481f6ee755ee19e048cb41f7d275d7f4e41f12bb
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://dugedepap.ru/wix?keyword=cruel+zelanda+pdf+descargar+gratis PDF link annotation
    • http://nibakelenixezas.getenjoyment.net/bulk_density_usp.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxixixixi/hh5ihib/poborisikimopefuselit.pdfIn PDF document text
    • http://kedepoba.sportsontheweb.net/giduxinarigojutifej.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebesoxu/CbT1ghp/everfi_module_5_credit_scores_answers.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/reading_level_to_lexile_level_conversion_chart.pdfIn PDF document text
    • http://pararapameso.getenjoyment.net/4806244856.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_604a3db676ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466679/normal_6043925781895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495399/normal_5fd227e836056.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/airy_stress_function_derivation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0a988c5-a6e4-4ea1-9c49-34994735260d/2003_kawasaki_bayou_250_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/70501047304.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/simple_indices_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/wow_skoll_taming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/english_vocabulary_list_with_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bef07d8-abc0-4b33-9548-226b25d3a9f4/mesa_boogie_mark_iv_headshell.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/all_in_one_video_games_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f745718-d9fc-4ba7-a530-eb2317a187ad/safety_glasses_for_covid_19_protection.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CB 5276 bytes
SHA-256: c52b26462920a29ead5742477c79d7491a26b0f01c594f925a91052e75b4632c
font_01_sfnt_off00010ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD0 11944 bytes
SHA-256: 08c5ca2638184091bea8c6575c5a09a6125fc251d46746d568b62a21c8c1f229
font_02_sfnt_off000131f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131F9 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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