Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9e2ecfc2be6a9e…

MALICIOUS

PDF

79.0 KB Created: 2021-03-30 14:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b5e950bf8e65660911d2ec2746b10d3e SHA-1: e0b2f2ae0b409e7653b0e23bdd60f2ea4bc34120 SHA-256: 0e9e2ecfc2be6a9e1a62bf3331dd16e3c56968a002bdee3b510fcfc09cb2ac77
126 Risk Score

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 0.9997

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://soxebez.ru/strik?utm_term=williams+sonoma+bread+machine+model+ws0598+manual PDF link annotation
    • https://cdn.sqhk.co/tedubifo/iIhggh6/maze_prison_escape_book.pdfIn PDF document text
    • https://vamekalufigo.weebly.com/uploads/1/3/1/1/131163651/semukumosoja_zomamoge_bodaxafaza.pdfIn PDF document text
    • http://tipijijajofupi.sportsontheweb.net/passive_all_forms_exercises.pdfIn PDF document text
    • https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/rejiwipirize.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/fudute.pdfIn PDF document text
    • https://cdn.sqhk.co/kiranagel/Pihra6t/wutazesurifezazigage.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/4088540.pdfIn PDF document text
    • https://gafewifem.weebly.com/uploads/1/3/1/3/131379815/limewini.pdfIn PDF document text
    • https://nugelemuv.weebly.com/uploads/1/3/0/7/130739301/pokuzener_woboxuj_wonigoje.pdfIn PDF document text
    • http://nabenopavaz.iblogger.org/kesizinudomejimisagasez.pdfIn PDF document text
    • https://fofonamid.weebly.com/uploads/1/3/4/8/134869219/3469970.pdfIn PDF document text
    • http://rigizaba.iblogger.org/cch_ct_file_trn_foxit_reader.pdfIn PDF document text
    • https://cdn.sqhk.co/laxegipo/gi4Vbge/sigeferafutigexeti.pdfIn PDF document text
    • http://zalavovira.22web.org/avivamento_na_rua_azuza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sewavun.epizy.com/the_family_man_movie_filmyzilla.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/guvejovutovuvojelixita.pdfIn PDF document text
    • http://pisironebininuw.rf.gd/asagai_i_live_the_answer.pdfIn PDF document text
    • http://pexefenebize.epizy.com/advanced_ms_excel_syllabus.pdfIn PDF document text
    • http://vojapexa.rf.gd/kokagevivemijuvuz.pdfIn PDF document text
    • http://karifopiti.epizy.com/les_vacances_du_petit_nicolas_film_complet_gratuit.pdfIn PDF document text
    • http://tutalagu.rf.gd/bob_evans_nutrition_facts_breakfast.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_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 6040 bytes
SHA-256: 7cad28d6d36e14652c5877256a98f860ccc2ab9da5d726c42d3bfddaf0189015
font_01_sfnt_off00010adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADC 10900 bytes
SHA-256: 836b92a73c1c886664acbe90942611d3a561b31a392f2fcf871b70bd8303ac73

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