Malicious PDF — malware analysis report

Static analysis result for SHA-256 447a232d1685e719…

MALICIOUS

PDF

73.7 KB Created: 2021-02-25 01:17:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7ce1553ac1c39a5af7a0f3d0648388f8 SHA-1: 66cd1be4c51d7f0ef8e5b774a1c95983e655587c SHA-256: 447a232d1685e7198ded02e1e1a843ce2e7a80bfda6d888b0a9f093297a51a9a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=when+it+changed+joanna+russ+theme PDF link annotation
    • https://peniseguj.weebly.com/uploads/1/3/2/7/132712198/pulumuxaxorasi-musutetojobugi-rofisowugefonat-sifomisovipoji.pdfIn PDF document text
    • https://bavipakodotem.weebly.com/uploads/1/3/5/9/135958795/1065508.pdfIn PDF document text
    • http://robot3.site/sagarupefezapveja5.pdfIn PDF document text
    • https://goginaderexikez.weebly.com/uploads/1/3/5/3/135306094/8ee5b823053ec.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/starting_out_with_java_from_control_structures_through_data_structures_4_e.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/gonoduwirofuli_mesonapivazux.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/how_to_build_ingenuity_convertme_swing-2-seat.pdfIn PDF document text
    • http://prognoz-football.club/chronicle_herald_crossword_puzzle_answers53jmk.pdfIn PDF document text
    • https://pabedimulexi.weebly.com/uploads/1/3/1/6/131606760/lepebuf.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/kodufufasexisalawina.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/la_casa_de_los_espiritus_pelicula_completa_cuevana.pdfIn PDF document text
    • http://banque-populaire.best/nugajafunoroi1owi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/2020_video_games_nintendo_switch.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/what_is_love_pain_quotes.pdfIn PDF document text
    • http://widifusi.myartsonline.com/calories_in_taco_bell_shredded_chicken_soft_taco.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_off0000e4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B1 5408 bytes
SHA-256: d679ac8f5117122e2c6351b58bb66d7839e895362d462c0f1fd7f4331737da43
font_01_sfnt_off0000f702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF702 10208 bytes
SHA-256: 5b996c22b3da2091cbd56c964a89b51264d3354201fda460fbf71815fa432325