Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2db4d50985e7e4…

MALICIOUS

PDF

87.9 KB Created: 2021-05-23 01:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9442e23b4f64b5745cafd15059cb4caa SHA-1: 9c15050035d01fa20de3ec9829588e4dc283f987 SHA-256: eb2db4d50985e7e4ab2546fd0c53c40f618ba1a57763cfbe148f3670244c295c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a social engineering lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://midufefew.ru/strik?utm_term=how+to+learn+basket+weaving PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mufukep/insinkerator_disposal_cord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d10034-4d15-4731-9ed3-62829578c739/tafokaxuvosowojekivef.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/mimo_digital_beamforming_radar.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/22081898296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c043da82-3305-452a-96ce-83857f03f509/when_does_dork_diaries_14_come_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5fe83b-8f09-4940-a449-26c936d3002c/30435916476.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/32442921315.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/42380818329.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/13172968614.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/movies_wood_me_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/a_thousand_splendid_suns_laila_character_traits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3398f8c-22da-4692-93ca-fbabbfacaf03/mojebogasosodiparala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f56006d-3f3f-42b3-a090-b759f3395148/evaluation_mouvement_trajectoire_vitesse_6eme.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/badrinath_movie_full_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/join_files_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/times_of_india_epaper_lucknow.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/cummins_6cta_8.3_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/82886750163.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/60680621650.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/versa_watch_winder_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/19538967951.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/47459925395.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/makowitubomi.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/call_center_interview_questions_with_answers_for_freshers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4F 3084 bytes
SHA-256: 579a3896d580439fdce9edefefff9f5b20222805d9c10bcfdf37f7f472c97574
font_01_sfnt_off0001185c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185C 5168 bytes
SHA-256: 1cb5280521c5055196dc8d643db367c1fa777a584d0bb63f0a738b1730d15d34
font_02_sfnt_off00012a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1A 12120 bytes
SHA-256: 221bb781a7dde05821d127cdaf512d887904b9e3b740e90bca6aafe078aa1c70

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