Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0383f8d5717d705…

MALICIOUS

PDF

77.0 KB Created: 2021-03-08 23:14:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9331485800af7dc4c7cc86f9c85cdc51 SHA-1: de26c1b36f6988e12f6c48cef342e058729f0d4b SHA-256: f0383f8d5717d7050f0c02038d90a462a353222e5470c0a2b24bb8cc262ad652
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a link to a trailer song, likely to trick the user into visiting a malicious site. ClamAV and ML classifiers flagged this PDF as malicious, indicating a phishing or trojan payload. No scripts were extracted, but the presence of an external URI and the high risk score suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/123?utm_term=boyka+undisputed+4+trailer+song
    • https://static.s123-cdn-static.com/uploads/4473340/normal_6008e899abfa7.pdf
    • https://static.s123-cdn-static.com/uploads/4461484/normal_5fc85d0be62c4.pdf
    • http://kikaxefe.22web.org/ejercicios_de_matematicas_1_eso_estadistica_y_probabilidad.pdf
    • https://cdn-cms.f-static.net/uploads/4447647/normal_602722808ed67.pdf
    • https://cdn-cms.f-static.net/uploads/4415767/normal_5fe9c83237861.pdf
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5fe663a7f31e8.pdf
    • https://cdn-cms.f-static.net/uploads/4450724/normal_6039572c72c40.pdf
    • https://static.s123-cdn-static.com/uploads/4403273/normal_6006f1d8288f5.pdf
    • https://cdn-cms.f-static.net/uploads/4453891/normal_603ab18e30311.pdf
    • https://cdn-cms.f-static.net/uploads/4455886/normal_600eaf03190b5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d518849f-dd08-4cbd-950c-390278c3b923/forix.pdf
    • http://dekixugo.epizy.com/16532038573.pdf
    • http://jivurikevovuwud.epizy.com/conjunctions_worksheets_for_grade_5.pdf
    • https://uploads.strikinglycdn.com/files/a0f35c21-6538-4c93-b354-04bc0269feef/what_is_the_best_personal_blender_for_smoothies.pdf
    • https://uploads.strikinglycdn.com/files/752f2071-f702-4609-b95a-df9191661fa1/prefixes_and_suffixes_worksheets_4th_grade.pdf
    • http://zadagudigewe.rf.gd/engineering_drawing_lettering_guidelines.pdf
    • http://gegapitigiz.rf.gd/roja_movie_telugu_songs_free.pdf
    • http://dasowarixolusix.rf.gd/digital_certificate_pendency_report.pdf
    • http://vowipinarofesax.epizy.com/best_motorcycle_accessories_shop_near_me.pdf
    • http://tufomatewivade.rf.gd/bestwap._in_2019.pdf
    • https://uploads.strikinglycdn.com/files/15955384-47d8-4f5f-a8dc-7fc018f20a8d/kisixunugu.pdf
    • https://uploads.strikinglycdn.com/files/c5d71ae9-f07f-4f3c-a00e-b212bc69bcbd/zexitepete.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_off0000eec0.bin
569fa104ca2edd7331acce6b956dd07ad555b87030f4d8025551c4207bac20d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC0 5432 bytes
font_01_sfnt_off00010165.bin
b96a47e6fdfca8f978df5be4efa1ba098e0871b89b78e619f6bc0991cdf3c075		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10165 10824 bytes

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