Malicious PDF — malware analysis report

Static analysis result for SHA-256 0107c1f6a8b3106a…

MALICIOUS

PDF

73.3 KB Created: 2021-02-27 00:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4d68dec4754be8d367ad27a8436670fc SHA-1: 55435f943962131a401bbd749b4e10c12412ec81 SHA-256: 0107c1f6a8b3106a0cf449921dc7219401a1d7dae31c354a06f24fb9af56f2e7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/aws?utm_term=this+is+amazing+grace+chords+guitar PDF link annotation
    • https://cdn.sqhk.co/pakebisas/29VUih6/galaxy_note_wallpaper_hd_download.pdfIn PDF document text
    • https://mivebomuponi.weebly.com/uploads/1/3/1/3/131398008/naxibibijuzivok-sixabeke-govinivugu-serojixized.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/RBwLMdX/badusha_song_ringtone.pdfIn PDF document text
    • http://jaraxusej.iblogger.org/lamesemadatuxuvifiv.pdfIn PDF document text
    • http://delojenopow.66ghz.com/5723518002.pdfIn PDF document text
    • https://lekorasosin.weebly.com/uploads/1/3/4/6/134612915/likopi_mutetaka.pdfIn PDF document text
    • http://reduslim-sito.site/oracle_12c_download_for_linux_64_bityd7ps.pdfIn PDF document text
    • https://mawoluzapulumar.weebly.com/uploads/1/3/6/0/136082117/dce09843bc.pdfIn PDF document text
    • https://xonasuxodu.weebly.com/uploads/1/3/2/6/132681295/velunuzebi.pdfIn PDF document text
    • http://ideal-it.fun/keramupitovinepisevgsibq.pdfIn PDF document text
    • http://brosbass.com/bodmas_worksheets_for_grade_7_with_answersz7rtn.pdfIn PDF document text
    • https://panebelodoz.weebly.com/uploads/1/3/4/6/134619461/lejovefasamo_radiwowuki_murawujikatuzuf.pdfIn PDF document text
    • https://roxuvipiga.weebly.com/uploads/1/3/4/6/134637137/somifivejapugovi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevesijuduma.atwebpages.com/seadoo_service_manual_free_download.pdfIn PDF document text
    • http://ralomefin.epizy.com/beneficios_de_la_lactancia_materna_para_el_bebe_y_la_madre_oms.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_off0000e2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 5320 bytes
SHA-256: 1687ee28ba9712bd0ed07e534b35d396c9a3ee673f1465221d2ccc0bbd134a6e
font_01_sfnt_off0000f4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CE 10300 bytes
SHA-256: 52c5f9ac46ec9a274058082e1909236cbf72aa6733fe3006feffa9250f0d71de