Malicious PDF — malware analysis report

Static analysis result for SHA-256 95887cfe47aeada9…

MALICIOUS

PDF

64.0 KB Created: 2021-03-06 09:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a7f4516fcda212f0f30b7c7ca2be7b2e SHA-1: 80ecc5ea716c0ace9d17a29999d405c9f6151015 SHA-256: 95887cfe47aeada99cf8bf8e4cf73d15f65f3c9248a7ffa8b70dc6d5f69ae700
124 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.8535

Heuristics 4

  • 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 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://pelibifir.ru/award?keyword=s0900+charter+ref+code PDF link annotation
    • http://dadujez.22web.org/is_the_twilight_series_on_netflix_or_hulu.pdfIn PDF document text
    • http://detonic-italy.website/lunewutewirexazw90ga.pdfIn PDF document text
    • http://depupejaxidolip.22web.org/excel_2013_power_query_ribbon_missing.pdfIn PDF document text
    • https://cdn.sqhk.co/bimonabozo/hbZ9jeg/epic_heroes_war_mod_apk_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/iigLtLx/53137036916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494433/normal_6037929da15df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527357/normal_603bc98921209.pdfIn PDF document text
    • http://tuzupibu.scienceontheweb.net/what_does_to_review_something_mean.pdfIn PDF document text
    • http://study-english-04.space/stipagrostis_ciliataohwo9.pdfIn PDF document text
    • http://dkblogin-de.com/download_unfriended_movieyi67a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384295/normal_5fc71afe1e4cc.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/migalaguxolite.pdfIn PDF document text
    • http://com-servers.online/16_channel_mixer_price_in_nigeria16ui2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_6021001dcd489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_5fea3b0b776c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491926/normal_60250c6ed9e17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_60391a3eec69f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501962/normal_60197817db046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5ff55487135dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vevazodovojegos.rf.gd/xixajafi.pdfIn PDF document text
    • http://wubojupegija.rf.gd/fomawagaruzomokibipavutu.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/jetogen.pdfIn PDF document text
    • http://wesovipimamino.epizy.com/arcsight_esm_7._0_installation_guide.pdfIn PDF document text
    • http://merapenerabari.myartsonline.com/ginozolurawofimudewanof.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_off0000d618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD618 5300 bytes
SHA-256: eb7cb2713fb2bddf8db589c3e222b01e4424bbcf2756b76630b344360a97a86d

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