Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab30be5cef1ca13…

MALICIOUS

PDF

78.4 KB Created: 2021-04-06 02:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ae31ca3acc5effbf0fe2627b4919b5ce SHA-1: 94d32b6c0eaa2a1f60a3ab67b9ff9c36e17adf78 SHA-256: 2ab30be5cef1ca13479e964ff55bcbf48aafbca64b2f50393071402f2e016ef8
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a deceptive link farm. While no scripts were explicitly extracted, the presence of external URIs and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/award?keyword=jee+advanced+mathematics+notes+pdf PDF link annotation
    • http://hopecommunitynaz.com/dewivupijufipafojasutakolsyy3i.pdfIn PDF document text
    • http://cosmicgig.com/t_i_zombie_catchers_hack_iosrccwm.pdfIn PDF document text
    • https://wutomafokusax.weebly.com/uploads/1/3/5/3/135314756/gajavulo.pdfIn PDF document text
    • https://kobafanosige.weebly.com/uploads/1/3/4/0/134016660/6e8f407fe532.pdfIn PDF document text
    • http://lp-consalt.ru/gugibukabapunepijefakazirvc8j.pdfIn PDF document text
    • http://carins.info/lefaguvemusep31cmo.pdfIn PDF document text
    • https://pizazolumugi.weebly.com/uploads/1/3/4/0/134016987/b7a7e9.pdfIn PDF document text
    • http://chtotakoebezuz.biz/nibanamovunitobilo71aq.pdfIn PDF document text
    • http://momentikshop.space/kakabexugurowobyeto9.pdfIn PDF document text
    • http://steblin.pro/what_does_flock_mean_in_british_slangs58h6.pdfIn PDF document text
    • https://ninefajesazaga.weebly.com/uploads/1/3/5/3/135384029/3185658.pdfIn PDF document text
    • https://mijevofere.weebly.com/uploads/1/3/1/6/131606011/mazokaxuvu.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/tobepuk0dpx.pdfIn PDF document text
    • http://doucheop.xyz/famous_modern_portrait_drawing_artistsblgr9.pdfIn PDF document text
    • http://wwnews.site/shiva_shambho_bharatanatyam_video_song8awx7.pdfIn PDF document text
    • http://securityverifiedservices.com/lekodetefobifodagagic0u3t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daduzafez.epizy.com/26071108928.pdfIn PDF document text
    • http://fokogemuzaraw.epizy.com/life_skills_assertiveness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f7b7c5-79c0-4645-b800-a8f54f765f3f/why_is_glock_19_gen_4_being_discontinued.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83ead893-a5c0-40b7-a501-02823617eac0/christmas_carol_lyrics_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3d627c4-eda9-45fd-8496-f0e4ee47870e/13125364990.pdfIn PDF document text
    • http://nedomutologibum.epizy.com/bond_market_history_graph.pdfIn PDF document text
    • http://marabawem.rf.gd/google_analytics_report_template_excel.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_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 5316 bytes
SHA-256: c67d53c7930e871559819c9e1e842dd73d71a5a55dc46db36dd420c12b3c7b35
font_01_sfnt_off000104d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D1 11568 bytes
SHA-256: 330ea4da40054d57418709ba685bf197abccc4abd217de929fbda103faf85224

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