Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05a5bd9937de910…

MALICIOUS

PDF

76.0 KB Created: 2021-04-02 18:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dee6f50fc52bbcb9c2184229db9adc2b SHA-1: 9a2811129b0bf8bc42869ccf0fed474d9cf9519b SHA-256: c05a5bd9937de9102f212bc3ad5e80ec8eb5b71005909aedca485c1741e03c33
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users through deceptive content, likely leading to a phishing attempt or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=royal+manufacturers+stainless+steel+manual+lever+press+citrus+juicer
    • https://cdn-cms.f-static.net/uploads/4492246/normal_5fd895b74b032.pdf
    • https://cdn-cms.f-static.net/uploads/4505771/normal_600b929f9b531.pdf
    • https://cdn.sqhk.co/bitomasijelo/YidoVUS/fluxx_hoverboard_manufacturer.pdf
    • https://zivozisexime.weebly.com/uploads/1/3/2/8/132814465/kezixele.pdf
    • https://cdn.sqhk.co/livukigelo/c1ngfhe/66991034091.pdf
    • https://static.s123-cdn-static.com/uploads/4480162/normal_60090951cbe0b.pdf
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/3933091.pdf
    • https://cdn-cms.f-static.net/uploads/4372740/normal_6015ef233129f.pdf
    • http://zeruxejobimal.mywebcommunity.org/castle_on_the_hill_guitar.pdf
    • http://goxamid.mypressonline.com/randall_thompson_alleluia.pdf
    • http://simopuvoramawu.mywebcommunity.org/ambiance_bain_akido.pdf
    • https://cdn.sqhk.co/norowitidot/gZRgWa1/maharashtra_anganwadi_bharti_form.pdf
    • http://wejuzofibab.medianewsonline.com/information_technology_degree_worth_it_reddit.pdf
    • https://xufolonul.weebly.com/uploads/1/3/2/6/132695880/21e6264361ff23.pdf
    • https://cdn.sqhk.co/vuvupewog/ijibThe/best_free_logo_maker_app_for_android.pdf
    • https://cdn.sqhk.co/fekoguwiwu/Ugihh3m/mame_asteroids_deluxe_background.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/palikuvexake/negative_and_fractional_indices_worksheet.pdf
    • https://s3.amazonaws.com/zowibatev/information_technology_specialist_resume.pdf
    • https://uploads.strikinglycdn.com/files/78cca9e0-ec1c-4b70-b986-e8f7ea7e30c0/89051917669.pdf
    • https://s3.amazonaws.com/jadudusujuje/2010_town_and_country.pdf
    • https://uploads.strikinglycdn.com/files/d53d29c4-74f4-4fbe-b4c5-79fbc8bf54cd/16685710749.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea8b.bin
b5b70a4330f8b3c59455a2d1178ad6baa6d1f690c6638dc73c5d76e696780c9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 5404 bytes
font_01_sfnt_off0000fcf3.bin
4e915e45f53a934218499432d3ba6f08335959a4fad4f1f0ef36033346bedfbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF3 10920 bytes

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