Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d94d66b9916dec…

MALICIOUS

PDF

89.1 KB Created: 2021-04-06 09:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d36e1bb4343779e91e0019d86e71b6dc SHA-1: 7379f29210857db7835c283e1257b2b30373dfbf SHA-256: 47d94d66b9916dec30c96f47d5d49e72ef1e014891b8b584fa09795a605c1358
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/aws?utm_term=controller+xbox+one+usato+amazonbasics PDF link annotation
    • https://cdn.sqhk.co/mugegiduveb/5hgv7MU/mapuzo.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/pyramid_principle_barbara_minto.pdfIn PDF document text
    • http://womirewuzakuf.sportsontheweb.net/vertical_farming_thesis.pdfIn PDF document text
    • http://viwoxufegoger.sportsontheweb.net/work_and_time_formula_aptitude.pdfIn PDF document text
    • http://mesanezedid.mypressonline.com/angiospermas_y_gimnospermas.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/printable_2020_calendar_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/f5inOgc/bopet.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/fks2Fib/dino_hunter_deadly_shores_mod_apk_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad9b5d3f-dd24-4414-acd2-ea1f7f41baab/does_the_keurig_k40_come_with_a_water_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ead492f7-227e-430c-a352-80defb52b885/pioneer_vsx-522_remote.pdfIn PDF document text
    • http://gajamozaxekega.atwebpages.com/ctet_answer_key.pdfIn PDF document text
    • http://xonuzerupivivi.rf.gd/barbecue_recipe_book.pdfIn PDF document text
    • http://nelipofamarul.epizy.com/transformer_centiare_en_mtre_carr.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/eton_bluetooth_emergency_weather_radio_review.pdfIn PDF document text
    • http://nitupodok.epizy.com/lidalazodidujalitujalazu.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/kyocera_ecosys_fs-3140mfp_manuale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5c32261-8ec7-4dca-a0eb-98836bb4cd06/1012873046.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/78756451819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5e182d-f27d-4074-9423-d7738862a3cd/7809218663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccff9660-2618-411b-9668-eaf4b5dbfc6e/kopimibepolewufizoregiso.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_off00011ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECC 5108 bytes
SHA-256: a4f2b15815385ee2aa91c7b877db25424b41c77f4f01b2482bf884301e49b9c0
font_01_sfnt_off0001301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1301C 11972 bytes
SHA-256: b4654cf5a2d8f197ca7ddb047f6861ce410e686d382450e74b9d5171cf20afe8

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