Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d26d700a99dcbc…

MALICIOUS

PDF

71.8 KB Created: 2021-02-23 09:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 89dd9c0a5328d8d37999ef7a60afd30b SHA-1: 4404b2f51944fe3e0c17f76d054ed13ff81acaee SHA-256: 87d26d700a99dcbcf41bb85306fd282679a3132f1ca328211bbb28c83b674b57
96 Risk Score

Malware Insights

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

The file is a PDF that contains numerous embedded URLs, many of which are associated with malicious or unknown reputations. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI pointing to 'seumenha.ru' suggests the document is designed to redirect the user to a potentially harmful website, likely for phishing or malware distribution.

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://seumenha.ru/wix?keyword=samuel+perez+millos+pdf PDF link annotation
    • http://detonicufficiale.website/radiation_biology_bookskbbbn.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/uhcjqFT/transference_definition_psychology.pdfIn PDF document text
    • http://amorexpo.com/71572350789xp6qe.pdfIn PDF document text
    • http://dostafood.xyz/57754204025qkb0t.pdfIn PDF document text
    • http://1xbet-registr.site/xunemuzarosiv9tn3.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/m1hh0hf/block_craft_3d_hack_download.pdfIn PDF document text
    • http://drnextact.xyz/download_tiny_planets_episodesgu7qg.pdfIn PDF document text
    • http://alcexpress3.xyz/detigokobadolobuw9xt0.pdfIn PDF document text
    • http://kigenavozos.iblogger.org/whatsapp_status_tamil_hdvd9.pdfIn PDF document text
    • http://dubaxerunonafu.iblogger.org/best_organic_chemistry_tutor_on_youtube.pdfIn PDF document text
    • http://muziwavesos.iblogger.org/12787932550.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rupatojuko/atm_card_apply_form.pdfIn PDF document text
    • http://sedilipabowarad.rf.gd/56772947800.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/reformation_lutheran_church_columbus_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/best_android_games_with_controller_support.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/love_couple_wallpaper_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/ambarsariya_dj_remix_song.pdfIn PDF document text
    • http://zidetunoz.rf.gd/nutrition_label.pdfIn PDF document text
    • http://gijuvaginitawaz.epizy.com/jibepu.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_off0000cd03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD03 5036 bytes
SHA-256: c0b0212c15b8eb97d4eecf1b6215a97282659208a0433ae9f148854ab65d967f
font_01_sfnt_off0000de20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE20 10928 bytes
SHA-256: 2fd3c7cdeaba799b23a9bfe5378844e3b1528417cb204ac171e391a92cd5f484
font_02_sfnt_off0001022f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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