Malicious PDF — malware analysis report

Static analysis result for SHA-256 0314ff4ecad22dd7…

MALICIOUS

PDF

75.7 KB Created: 2021-02-24 17:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e201dd19ec45a101e4202d8fe234f62c SHA-1: e3853cfb04e1b76122b4bda43e4e6aa91b0017c1 SHA-256: 0314ff4ecad22dd7810601923af15850b0e00b03658d8b5ee6cb1da2d0ac937a
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to potentially malicious domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware disguised as media content. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this phishing and content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=the+hunger+game+2+full+movie+download+in+hindi+720p PDF link annotation
    • https://levapexufusetij.weebly.com/uploads/1/3/4/9/134904519/c0889c2a6.pdfIn PDF document text
    • http://axacheat4.xyz/21873125188qw0lx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_6031bd8fa355d.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/cAayWyh/my_ultimate_bucket_list_book.pdfIn PDF document text
    • https://cdn.sqhk.co/tudosiki/gh4zgcn/fogoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_601ec982a4f73.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/Cjeijgh/20741107679.pdfIn PDF document text
    • https://nelixifejesuvol.weebly.com/uploads/1/3/1/4/131406681/wipogikape_pegugakozaje_mofexafofu_koron.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499629/normal_600f1cbe0a7b3.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/mematixe.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/jjjejit/majewududolen.pdfIn PDF document text
    • http://gbarb.me/platform_beds_for_sale_in_san_diegoj2szg.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/sutawowirosuvuv/girl_scout_animal_helpers_badge_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/bram_stokers_dracula_full_movie_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/format_number_to_2_decimal_places_c.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/27795477029.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/amazing_photos_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/cambridge_igcse_biology_study_and_revision_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/90674108083.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/xiwajovororobavebel.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_off0000e960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 5732 bytes
SHA-256: f5c5baa47baa4ac0093df3cfc9eb8943e9102b6fb339667cae36c77d7b3f4b9f
font_01_sfnt_off0000fcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDD 10544 bytes
SHA-256: f980b53b5a50bb27f1030cdeb3520769b33e78d8bc00ec40dbc4f66171c6dde0

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