Malicious PDF — malware analysis report

Static analysis result for SHA-256 598e6542b405b0c9…

MALICIOUS

PDF

84.2 KB Created: 2021-04-01 22:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a7f7cbb90b0748275b34a331b95ef6af SHA-1: b0ec09041ddf385f2f1dc9fdeea7c5ec7b013a98 SHA-256: 598e6542b405b0c9c47b44017218dedbb6371cf67c6f5c80114df829b0b6ec91
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'xezojetit.ru', which is associated with a lure for 'spotify apk file for ios'. This suggests a phishing or malware distribution attempt. The PDF structure and embedded content are consistent with attempts to exploit vulnerabilities or trick users into interacting with malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=spotify+apk+file+for+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417419/normal_606254d440d6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448735/normal_5fc654f61e309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_600c16ea5d0a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_60425f020b3f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450037/normal_6023c72d3a9a3.pdfIn PDF document text
    • https://cdn.sqhk.co/nadovexum/6ieYFwt/descargar_recargas_rapidas.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/8cichhv/air_france_airline_flight_status.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6016c395345c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448137/normal_600a91b749962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_5fd31622c8573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446170/normal_5fc86ae82c794.pdfIn PDF document text
    • https://cdn.sqhk.co/ritelatefoxa/5yoggii/accounting_practice_problems_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/atb9WE2/best_color_laser_label_printer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443812/normal_60571fb58100c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_601cefb40d134.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/ibjcigc/vefodozalojebi.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/bvQij3I/car_logo_quiz_ppt_free.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/banula/34448927876.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/49605968781.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/prayer_beads_buddha_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/70108185156.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/jabebesenizo.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_off0000f661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF661 5164 bytes
SHA-256: b17880e46aa11aa90fb059b968518968f450d5a4c78a9432a5478c4886ae5c35
font_01_sfnt_off00010810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10810 10796 bytes
SHA-256: 08b84e40611af6f59f43654b8dd3537d120b5bf9584190962523b804fc52afe4
font_02_sfnt_off00012d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D11 16096 bytes
SHA-256: 2fa4f296fe9e38b1bea2264e65e06c45fbbf4edfcb32b68fd436b1108ab95b01

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