Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4f64fa0f862138…

MALICIOUS

PDF

78.5 KB Created: 2021-04-02 19:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d14a5df5c3ba6fe6c9a02cb0c66e4714 SHA-1: 5003ca14712e3242d87c1a190e6783ea580d1227 SHA-256: 8d4f64fa0f862138d384cc981cde1f13dc5cb764fdd6e268fc4447c84df42123
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of the external URI and the nature of the URL suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=types+of+adaptation+in+animals+pdf
    • http://gelokan.sportsontheweb.net/concrete_grade_and_mix_ratio_table.pdf
    • http://senukekufop.iblogger.org/inverse_functions_gcse_worksheet.pdf
    • http://mizejodaf.mywebcommunity.org/70526593700.pdf
    • http://kafalukuwemi.mygamesonline.org/54425168788.pdf
    • http://sipipewawezizuf.getenjoyment.net/ruxumisufegarepova.pdf
    • http://duwudivusupo.mygamesonline.org/centrifugal_pump_design_calculation.pdf
    • http://mesikigodijope.mypressonline.com/nugujekatejoxoborumixag.pdf
    • http://siwupojotuj.getenjoyment.net/ceratite_pigmentar_em_ces.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gajakelegeza/paxanigotunejer.pdf
    • https://s3.amazonaws.com/paropabaru/38259518672.pdf
    • https://s3.amazonaws.com/sizadagazagaj/elizeu_rodrigues_livros.pdf
    • http://dopovis.myartsonline.com/ativa_ld800_shredder_manual.pdf
    • http://faxevimisosideg.myartsonline.com/libro_el_arte_de_amar_escritora_polaca.pdf
    • https://s3.amazonaws.com/mukut/kawapivojudosafazebupu.pdf
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_6fdb3136c2c5405e9c21e25a7b41493c.pdf?index=true
    • https://9cc02d22-446e-415d-9686-6e49aadcb3b3.filesusr.com/ugd/aa6a08_d1f54d35d42243278e535b6e14a3bcbc.pdf?index=true
    • http://jujonejetas.epizy.com/34706537260.pdf
    • http://pudolajuji.atwebpages.com/xunaxibaxitidamezigexi.pdf
    • http://tuzipegubeluwo.epizy.com/advanced_trauma_life_support_portugues.pdf
    • https://2f60c0de-bae8-48d8-8f3f-ce7907f87c52.filesusr.com/ugd/badafb_4b0c2b6ee2e0413c8dfa18bbba7e1233.pdf?index=true
    • http://fejonaxi.myartsonline.com/gate_syllabus_2020_civil.pdf
    • http://bebovufuvuji.myartsonline.com/how_to_make_fire_extinguishers.pdf
    • https://s3.amazonaws.com/nijudow/intellij_auto_format_javascript.pdf
    • http://mizozibobekujul.rf.gd/33930073348.pdf
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_9f9c7e9595c949bf930ab9e1736ff3bb.pdf?index=true
    • http://budakofis.epizy.com/fundamentals_of_computer_science_book.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3a1.bin
e68b8803f45698e3c10da7f31afde2a6c43222f8d74512fe5f005c8867963455		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A1 5144 bytes
font_01_sfnt_off0001051f.bin
7264f914d126985b9878822f85ae8bb0d893ca96d4c3ecc829d305af015e9b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1051F 11164 bytes

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