Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d557c6efe8cc56…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 06:06:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d1953136f9f902373be8d572a0862d0a SHA-1: 0990391b5ecc4612d1faea0559915472764fa1f7 SHA-256: 24d557c6efe8cc56255237f40bd6e08fa060c2bf02c3595112bca08f21b09afb
104 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to appear as search engine results. The heuristic 'SE_URGENCY_LURE' indicates the document likely uses urgent language to prompt user interaction. The ML classifier strongly suggests maliciousness, and the presence of many unknown reputation URLs points towards a downloader or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wix?keyword=blue+corn+atole+to+buy PDF link annotation
    • https://cdn.sqhk.co/sevafeluba/lighcJn/bovoxokoja.pdfIn PDF document text
    • https://cdn.sqhk.co/niturunajik/fugjieh/20210272139.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/xikutadopuniwi.pdfIn PDF document text
    • https://bujabofilurukok.weebly.com/uploads/1/3/2/6/132682168/95540996.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/hgchhLt/kids_spelling_learning.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/mEQhdYw/applocker_group_policy_not_applying.pdfIn PDF document text
    • http://jotodavusugiga.iblogger.org/xagamovoluviteleziza.pdfIn PDF document text
    • https://biwaxosele.weebly.com/uploads/1/3/1/4/131437294/rikalelejolu.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/c2b05d0009fa.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/vexeliku/fimogomizon.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/pifapesotenozelo.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/candy_crush_saga_hack_apk_iphone.pdfIn PDF document text
    • http://mibexaluji.epizy.com/xadobekalajenukikamepape.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/55378441128.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/church_budget_example_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/bootstrap_website_templates_free_for_education.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/gangster_game_android_mobile.pdfIn PDF document text
    • http://lekazukexofa.rf.gd/talking_android_erica.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/teremorevofozisakagobav.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_off0000d8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A4 4908 bytes
SHA-256: 4772be7d24380300f90bb35e3f850020bc42779dff2c4ffecaab91c8c8693717
font_01_sfnt_off0000e96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96A 11812 bytes
SHA-256: 9b61a5b027d30e91b347fe33a6ae45efda7de112a136da89a34d0739ea47fbd1

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