Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb1a48811bd285d…

MALICIOUS

PDF

78.8 KB Created: 2021-02-28 01:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 013ed881fe4edb7d466bce0e4c383613 SHA-1: fbecc6a1b12324ea1921d0da3f3652160e1a7c87 SHA-256: 9eb1a48811bd285df63bc4985720e8a73b8fff1bdaa917b8efbf0de3a080078e
96 Risk Score

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. The embedded URL is the primary indicator of the attack pattern, aiming to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=sample+parent+letters+from+teachers+elementary PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454056/normal_602f7ce579c87.pdfIn PDF document text
    • http://lulelil.22web.org/kesagav.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/bv1hajf/bomar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416154/normal_600d0499a845b.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/ndje1Dq/81004015781.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/myV0cia/27074154611.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/ghfdAq8/new_punjabi_sad_song_ringtone_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/hVhdPid/como_descargar_geometry_dash_world_para_pc.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/information_technology_degree_online_reddit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403684/normal_6029a70136005.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421478/normal_5fd066e5c3307.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofoziga/hhiNehe/mububejomajitarelun.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/gglrid9/91060530896.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/fedojigudaj/fipawez.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/carry_on_jatta_punjabi_full_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/anoushka_shankar_lasya.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/adobe_acrobat_reader_full_setup_free.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/o_come_to_the_altar_sheet_music.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF719 5460 bytes
SHA-256: 3fd56c2955fff6d32051c3444d60d9340ef4ca9ad679a7216080ab263058f4bb
font_01_sfnt_off00010985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10985 10640 bytes
SHA-256: c0830f12a44a8d965b1162e55d294304c8fef662c198d76a10ab8f887d3f8689

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