Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea486ee8f076637b…

MALICIOUS

PDF

69.0 KB Created: 2021-03-09 21:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 9e13b36c515d90996804895179c97df6 SHA-1: 935da9a997444e3ed4f8a3a3175c2cfa8222d983 SHA-256: ea486ee8f076637b54c26da774216e07259629e514f17b2ae0603fd28b9e803e
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 URI pointing to 'https://jottigo.ru/123?utm_term=a+distancia+ta+maltratando', which is likely a phishing or malware distribution lure. The document body is heavily obfuscated, but the presence of the external URI and the overall detection suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=a+distancia+ta+maltratando PDF link annotation
    • http://jaligovaw.iblogger.org/25313553354.pdfIn PDF document text
    • http://bometaximom.scienceontheweb.net/los_juegos_del_hambre_sinsajo_parte_2_pelicula_completa_en_espaol_latino_repelis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_6046c0db3a02c.pdfIn PDF document text
    • http://zaduzoronogikex.22web.org/espen_guidelines_on_home_enteral_nutrition.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/30548313786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_5fe74d40bfe3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_601770cc9943d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_603127804bdd4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_3e76ce120be748e7bb86a9ca481f164f.pdf?index=trueIn PDF document text
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_92a93658758941ec994fb2dec5a33607.pdf?index=trueIn PDF document text
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_8a5222ee52334bfa8dfa480588a1024a.pdf?index=trueIn PDF document text
    • http://mizuselafu.rf.gd/bekojejaxidazadotelibidu.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/chhaliya_movie_video_song.pdfIn PDF document text
    • http://kenabemaborok.rf.gd/do_katniss_and_peeta_get_together_in_catching_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/dell_latitude_e6510_driver_pack_windows_7_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/balufakimabu.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/1984_part_2_chapter_3_discussion_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/xazevuvedewotoxujare.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_off0000d245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD245 5072 bytes
SHA-256: 750b128c1d96e2b155f0a137687acec38ec0a830ce24ac83aceb9b977bcc8bd5
font_01_sfnt_off0000e36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36B 10484 bytes
SHA-256: fab25532c63dcff5fe956d0ca9a85ae8fc8c6f8b9394a88677d8e27bc4fe5e4c

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