Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba75d5ea3c7675a6…

MALICIOUS

PDF

59.9 KB Created: 2021-03-06 14:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b5d287b638736fd041522bac2e416681 SHA-1: 7c1259d77ea040837a43514670cc5608e09048f7 SHA-256: ba75d5ea3c7675a6dec473ff266c34cb9f40dd3f4de10aa9c044568901b0f138
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6876

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://druttle.ru/award?keyword=words+that+start+with+zinc PDF link annotation
    • http://vuvulusigi.scienceontheweb.net/ragekirer.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/GB5iebp/black_friday_tv_deals_2019_best_buy.pdfIn PDF document text
    • https://nulijuvak.weebly.com/uploads/1/3/3/9/133986618/xovod_bibudapi_xawenike_texilogesa.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/gdvA4ji/40326873594.pdfIn PDF document text
    • http://xutelopivi.22web.org/26913171895.pdfIn PDF document text
    • https://dimafaxatabevex.weebly.com/uploads/1/3/5/9/135991177/4553467.pdfIn PDF document text
    • https://zawanudodulir.weebly.com/uploads/1/3/1/4/131452903/boked.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/prgfpgB/customizable_stickers_in_bulk.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/what_payment_due_date_means.pdfIn PDF document text
    • https://meruxanige.weebly.com/uploads/1/3/1/6/131636855/7461700.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/hgicjhD/70183708393.pdfIn PDF document text
    • https://ligiponofejejo.weebly.com/uploads/1/3/4/3/134346234/gigurijepuv.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/gdjbojc/17662099448.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/what_are_some_good_topics_for_an_argumentative_essay.pdfIn PDF document text
    • http://lifolibi.sportsontheweb.net/69678932858.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f238abdf-92e3-4651-90df-65b6e8a648d9.filesusr.com/ugd/99965f_34e460aff26245efbcf2754d38862817.pdf?index=trueIn PDF document text
    • http://kavibajegis.onlinewebshop.net/cuisinart_cpc_600_series_manual_espaol.pdfIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_7aa26b8870cf4a588c1b1c99b35651d9.pdf?index=trueIn PDF document text
    • http://modujufuwalali.rf.gd/sevijomakusolofetadarewa.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/15682595528.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/votosowijawuv.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_718c6e4126484bb0b20c88f601a96bbb.pdf?index=trueIn PDF document text
    • http://nifofijaraja.epizy.com/tipos_de_funciones_en_excel.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE6 5152 bytes
SHA-256: c9476de2ad15302db824124b4cd5f4a44ff55bb7a2369242401118e956df2a93

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