Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d27eaf0cd70fb6…

MALICIOUS

PDF

59.9 KB Created: 2021-02-13 18:09:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 877b87b8268f4119028a9ebfd4f204d5 SHA-1: 5933415f7c6968eb3157b5b4c842998efbd06f14 SHA-256: d9d27eaf0cd70fb6ca716a016964cbd1157523f7f8bf3baf2ee7801306ecf291
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to 'https://seumenha.ru/123?utm_term=nebraska+golf+association+twitter', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references that align with the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=nebraska+golf+association+twitter PDF link annotation
    • https://cdn.sqhk.co/rogenujudita/iiAieJz/21885956631.pdfIn PDF document text
    • http://romotogez.22web.org/video_converter_for_android_2._3._5.pdfIn PDF document text
    • https://cdn.sqhk.co/vusopukov/jwfMzgj/pilafamofiroj.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/icggxic/rezevet.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/vavapekadoliti/berkey_water_filter_review_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/badge_template_creator.pdfIn PDF document text
    • http://baguselewaz.epizy.com/scheduled_caste_online_form_fill_up.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/reservation_form_template_wordpress.pdfIn PDF document text
    • http://risafusimuwo.rf.gd/cappadocia_private_tour_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/vatokeludumefulabiwuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/picsart_pro_mod_apk_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/runijugipapetirotetopoj.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/63410454567.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/90877887751.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/tuwawozel.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/sickle_cell_anemia_guidelines.pdfIn PDF document text
    • http://sosodif.rf.gd/finale_ligure_mountain_bike_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/joketote.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_off0000b404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB404 5316 bytes
SHA-256: 58615bde3327b979852f4dc2169258b8b69da746e4bde7fe4e2906cfdabbb624
font_01_sfnt_off0000c645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC645 8336 bytes
SHA-256: ae231ae87f40986d7a6556972f7191925feaf4c588375e934e31ae5f50c23463

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