Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bf4402e21fd1a9…

MALICIOUS

PDF

74.7 KB Created: 2021-03-22 16:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0325e13e473b1d2b0ffd8b05685e3fed SHA-1: 080445f687e488741ef29f48e2f7dfc3554cb8a4 SHA-256: 47bf4402e21fd1a9da4fac4acdf8a988e84ab82e361a9921271f22890c3b4fe5
184 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, indicating a link farm designed to redirect users to potentially malicious websites. The presence of multiple disposable hosting domains further supports this assessment. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9696

Heuristics 5

  • 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
  • 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://botokaw.ru/award?keyword=o+negative+blood+type+diet+pdf PDF link annotation
    • http://itclick.pro/malazan_book_of_the_fallen_audiobook_reviews5qb9.pdfIn PDF document text
    • http://ipai.online/how_to_type_epsilon_on_macdbnls.pdfIn PDF document text
    • https://mesitumavitolo.weebly.com/uploads/1/3/4/8/134866133/zoxivofire_gakuk_xonaw_witogevesowibub.pdfIn PDF document text
    • https://dulodegusatoto.weebly.com/uploads/1/3/1/6/131636763/xogadobu.pdfIn PDF document text
    • https://cdn.sqhk.co/gimatuvuwiw/hfpHiei/asteroid_approaching_earth_november_2020.pdfIn PDF document text
    • https://jipuzalo.weebly.com/uploads/1/3/4/6/134693454/zelupopepepuropajor.pdfIn PDF document text
    • http://chestlune.online/busanimck5y.pdfIn PDF document text
    • https://pogefaduvo.weebly.com/uploads/1/3/5/3/135391099/9fb8f.pdfIn PDF document text
    • https://fufilotaniwa.weebly.com/uploads/1/3/5/3/135321354/65ac76731a1d936.pdfIn PDF document text
    • http://cleanup-sale.site/davinci_iq_vs_pax_3_vs_mightyfpss6.pdfIn PDF document text
    • http://formverifiedbadge.com/tipos_de_sistemas_operativos_servidor1ngoz.pdfIn PDF document text
    • https://muwegegedagus.weebly.com/uploads/1/3/0/7/130738526/zumaru-darituvej-gegunewilebam-tuporulaz.pdfIn PDF document text
    • https://jiburivaduvu.weebly.com/uploads/1/3/4/4/134473865/bovuvemadagagal_runupemesoj_butexifudupa.pdfIn PDF document text
    • http://iciapp.xyz/interior_design_style_quiz_hgtvh38g9.pdfIn PDF document text
    • http://trysol.xyz/85175973504mub4l.pdfIn PDF document text
    • https://nugumogixowujo.weebly.com/uploads/1/3/1/4/131437940/cd4df468.pdfIn PDF document text
    • http://bilkaita.space/77190216323vl0le.pdfIn PDF document text
    • http://snapchat-alert.com/examen_potencias_y_raices_3_eso_aplip5way.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/iiiigi9/70994911264.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/DhdJPiU/defabigebavivivob.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/jhghahh/my_airtel_offers_4g_prepaid.pdfIn PDF document text
    • https://xokefinodoju.weebly.com/uploads/1/3/5/3/135316617/jezeluboza.pdfIn PDF document text
    • https://fifikasato.weebly.com/uploads/1/3/1/4/131437502/wugavuvidinaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/dobonubuzikipelepivuturu.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/which_is_better_firered_or_leafgreen.pdfIn 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_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 5264 bytes
SHA-256: 6fa0f8b29386f876d1de3e43f88e7571f50a883953f56179b6f37be55c206a5e
font_01_sfnt_off00010a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A84 11212 bytes
SHA-256: 2fd23e96682c2ca690f9db1237f19a84793ee5e5b68e03d5f5170b8d0747a939

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