Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0060a456dda6e83…

MALICIOUS

PDF

77.8 KB Created: 2021-03-07 18:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b06b454fee130eb208034048551ad64d SHA-1: 52d9a4884bc05b6019df4f1fa90d55dd12816d15 SHA-256: e0060a456dda6e8389801ce94bf935f1739e33bca945a92af09d477d03b8f5d5
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting it functions as a link farm for phishing or malware distribution. The document body, though heavily obfuscated, contains references to search terms and application names, likely as a lure to attract users to click on the embedded malicious links.

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 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.
  • 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://xezojetit.ru/123?utm_term=how+to+adjust+temperature+on+galanz+mini+fridge PDF link annotation
    • https://cdn.sqhk.co/jelasusoved/ZiflF9P/download_80_s_and_90_s_english_songs.pdfIn PDF document text
    • http://rijoginijamibeg.mypressonline.com/what_are_the_three_types_of_heat_transfer_that_occur_in_earths_processes.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/jFRlzHU/marvel_phoenix_force_vs_beyonder.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/lenovo_g50-80_i3_5005u_caracteristicas.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/pubasapirub.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/ghgjbI4/run_race_3d_online.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/4.5_aquatic_ecosystems_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/kuretunaba/difL3ji/the_tomb_of_mummy_4_free_online_movie.pdfIn PDF document text
    • http://safagiko.iblogger.org/what_is_the_criminal_justice_system_definition.pdfIn PDF document text
    • http://xewosaxebojufir.iblogger.org/31066130570.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/2e9dc9da-e480-481d-9b2f-96d059dae7a6/letovosajinobo.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_77342f4554e7404bb74719c8a19713d6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f488e965-33d6-4088-b23b-00e2525d0f70/nikabogamirifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14d67a3c-035c-4e9e-9f4f-0f35797d72ca/grade_4_grammar_lesson_9.pdfIn PDF document text
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_6370ad833843470f827a489cd5a40658.pdf?index=trueIn PDF document text
    • http://sefobetibaboxi.epizy.com/7836832496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0c1222-54cf-4918-902a-a8bc8cc2d0a4/dante_alighieri_y_la_divina_comedia_analisis_literario.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568a21e4-d1f9-42ca-b87e-5c3d06a6a500/58430139989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db529a28-0115-4c09-89b3-b26778bcfbd0/plantronics_c054_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691121f9-c065-4928-9924-5544674d7fa6/ww2_us_army_field_desk.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_ddcb69ffa21746709dc390acbc95585f.pdf?index=trueIn PDF document text
    • http://xemunebo.atwebpages.com/verizon_quantum_gateway_firmware_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4b8c1a6-ae19-4361-9bfa-1d3941fcb5be/luzabitedo.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_off0000f2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F1 5540 bytes
SHA-256: d29def9ff8bc7ad8736662a6ae8690fbf5b71ae41c65ce91a102fdbc67faf8e6
font_01_sfnt_off000105d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D3 10480 bytes
SHA-256: 82c86c64dda31410e0ed6bdf9cf35ef9431f60e833dabda0df3095beb4311d7e

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