Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48d913adef2b078…

MALICIOUS

PDF

70.7 KB Created: 2021-02-25 23:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a0293888cf126c56ab3b15d892d6b383 SHA-1: b71dda0e7b16aa72fc5c0da6ff86e4d3fed8ec7b SHA-256: a48d913adef2b078aab74006df0a6bf281e617793af661c0f83b3c9a72c6aaaa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://baarspo.ru/award?keyword=cursos+de+ingles+en+medellin+colombo+americano PDF link annotation
    • http://bestplacefor.rest/golf_clash_wind_chart_max_mid_minfklx3.pdfIn PDF document text
    • https://wikagigodoxuf.weebly.com/uploads/1/3/2/8/132814929/magej.pdfIn PDF document text
    • https://pixirexujana.weebly.com/uploads/1/3/4/5/134527097/1c6e0814319ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458161/normal_60143c526a41b.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/saeco_xsmall_plus_espresso_machine_manualyk5om.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499972/normal_60120917be395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_601976fc86111.pdfIn PDF document text
    • http://front-glass.website/43172455620r6ak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_601ef5a255850.pdfIn PDF document text
    • http://mazanatur.space/4889461702n0gra.pdfIn PDF document text
    • http://ourfanz.com/songs_that_bring_back_memories41ju3.pdfIn PDF document text
    • http://fb-copyright-help-from.com/vuwelolerojudobivqgkcf.pdfIn PDF document text
    • https://peditakufi.weebly.com/uploads/1/3/6/0/136097449/f2da1fa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5fd10d91762c6.pdfIn PDF document text
    • https://nudetotiba.weebly.com/uploads/1/3/4/8/134872476/5212896.pdfIn PDF document text
    • https://ramageputa.weebly.com/uploads/1/3/1/6/131637054/kabutekifus-dofavebe-fogedojoposuwij.pdfIn PDF document text
    • http://simkosa.website/free_piano_sheet_music_easy_christmas_songs1dl2x.pdfIn PDF document text
    • http://idealica-itufficiale.website/lelexojimemutolveov.pdfIn PDF document text
    • http://suludosepo.iblogger.org/21629417289.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/6930556.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://remofexemuja.rf.gd/chota_bheem_title_video_song.pdfIn PDF document text
    • http://xedoruvuseju.rf.gd/morning_pages_journal_template.pdfIn PDF document text
    • http://kabofed.rf.gd/14523974243.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_off0000d4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F7 5304 bytes
SHA-256: 5a494d4c450f562daffbb6482c9509b016b5a0b1c469cdace5c6f3c77a4eb713
font_01_sfnt_off0000e6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E1 11036 bytes
SHA-256: eb9d0632773b7b58abc90e8951c935c83dea71bfe9354d74c97b45285f51bf12

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