Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00e1a63c72da2cc…

MALICIOUS

PDF

72.7 KB Created: 2021-03-06 11:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dced22e6a455308210e8e2de53c9204e SHA-1: 39c3821859f3ae7b1851de769fbc8cfda1568ae7 SHA-256: f00e1a63c72da2cc11f3fbc4e845c45585fe4b3778d8f0a5d50761614d898cd5
126 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, indicating a link farm designed to redirect users to potentially malicious content. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment, indicating the file is likely a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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.
  • 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://botokaw.ru/award?keyword=how+to+become+good+at+drawing+fast PDF link annotation
    • http://melidagerukebel.sportsontheweb.net/microsoft_excel_flowchart_templates.pdfIn PDF document text
    • http://lajulufubugo.22web.org/concept_design_review_template.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/59329151717.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/vaxufunudajaribe.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/lazezedixo.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/acer_aspire_e15_windows_10_installieren.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/how_long_to_cook_cubed_sweet_potatoes_in_crock_pot.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/lojidagonake.pdfIn PDF document text
    • http://boketizabujig.scienceontheweb.net/pizajodisepifisizu.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/michael_vey_movie_where_to_watch.pdfIn PDF document text
    • http://sudilufib.getenjoyment.net/39968231869.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keguwaburafokul.epizy.com/86085190850.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/73040244307.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/tadukojafobisitevafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697cd3d8-1399-4606-9616-4ae98d1b23ba/beatles_sheet_music_piano_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dec4946-2e59-4eea-9a12-25d4ecac827b/best_sangean_portable_radio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cccd04-5cec-4bda-b57b-1d93925728fe/38651255945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e422f0a4-f419-4514-8882-7e993087c964/why_is_my_dvr_not_recording.pdfIn PDF document text
    • http://nomamazuzut.atwebpages.com/norwegian_escape_deck_plans_15.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db776a0b-c255-406d-9070-91d15f2bcdf7/pukax.pdfIn PDF document text
    • http://nilikimapineti.epizy.com/minecraft_maps_1._7_10_parkour.pdfIn PDF document text
    • http://riperuzitino.rf.gd/nirexivipabudogutotex.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_off0000e0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A3 5504 bytes
SHA-256: cc97be9c4f3660d306eb102452fe1dcb0e831a1ef621773b77fdf7f45de0f34f
font_01_sfnt_off0000f350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF350 10004 bytes
SHA-256: 934f0f52bd52ecb4d15505daf8eed5d6d2f556a943ccf49814ebfa965a6f8316

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