Malicious PDF — malware analysis report

Static analysis result for SHA-256 a682318810476dfb…

MALICIOUS

PDF

80.5 KB Created: 2021-03-05 09:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c29eb76d86138dd52f717af6a23911f6 SHA-1: 6f6005b1bb3f44d2b8d17d9a5f1166f7dd21bc9d SHA-256: a682318810476dfbaa2e515df8874f16037fafe631a657e13d85cd61466dc9f5
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/aws?utm_term=how+does+the+jane+austen+novel+sanditon+end PDF link annotation
    • http://kovatafob.mypressonline.com/net_core_mvc_tutorial_for_beginners.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/16479435.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/ghhe8Ze/roguxovegutisupafi.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/aCjifie/calls_blacklist_pro_not_working.pdfIn PDF document text
    • http://zanexipizuzog.iblogger.org/lather_and_nothing_else_questions_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/fokivetezabu/dRigdif/wifi_password_hacker_prank_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wojusipi/NJhRcjb/assassin_s_creed_identity_apk_mobile_indir.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/34322533606.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tepuvat.epizy.com/88394868135.pdfIn PDF document text
    • http://vebojikabugoxa.rf.gd/windows_10_update_1809_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/children_s_tylenol_dosing_sheet.pdfIn PDF document text
    • http://bixodog.rf.gd/bcbs_fep_medical_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/dewazodaj.pdfIn PDF document text
    • http://jokosen.atwebpages.com/how_long_does_it_take_to_learn_matlab.pdfIn PDF document text
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_80623720f5084607b73445848bd99653.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/minimal_pairs_exercises_with_answers.pdfIn PDF document text
    • http://batitesejikak.epizy.com/dopabebovepenor.pdfIn PDF document text
    • https://d19688e0-347f-4d9d-8cb3-d47c6e049f3d.filesusr.com/ugd/c618e9_51d4f1ac8ff74c61902d15f0b6c65ed6.pdf?index=trueIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_5173e5cb409248eeafa5ce4340146eb8.pdf?index=trueIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_ca07f458fd284ebcaf78a043700f4191.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/devereux_beach_marblehead_surf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/solaredge_inverter_spec_sheet.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_off0000fe1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1D 5008 bytes
SHA-256: d2f8840dff24a1027ef7b0d31aab1751a9e95f2ccfe59471b7680d40d4c905ae
font_01_sfnt_off00010f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3A 10724 bytes
SHA-256: fb2d6b99ed2be0fe68489cd763451b6d4246cdc6422370c1efab4d779096a925

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