Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70c72b63dd40557…

MALICIOUS

PDF

76.5 KB Created: 2021-03-12 02:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3bd9c6e91923d50aafdec26a02a64620 SHA-1: 23bf7c5f7d458d65e6e4eda1a46c6453e0c44c57 SHA-256: c70c72b63dd405575e11bd46a216f28d446de585da74f9884b0883ef7c070c74
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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 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://jottigo.ru/123?utm_term=javascript+coding+interview+questions+and+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423145/normal_600756f1b4a3d.pdfIn PDF document text
    • http://gratoramm.website/pivefumokufiw4g0bl.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/awdhesh_premi_bhojpuri_video_mp4_3gp.pdfIn PDF document text
    • https://nakidero.weebly.com/uploads/1/3/4/5/134524904/leluxopogo.pdfIn PDF document text
    • http://virnet77.ru/city_car_driving_lamborghini_huracandr2q6.pdfIn PDF document text
    • http://volosaty100.xyz/xamuwig763o.pdfIn PDF document text
    • https://sojutobifedurex.weebly.com/uploads/1/3/4/5/134588439/pixikefafano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497687/normal_602d55645f724.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375083/normal_5ff269950b93f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_6040f19616914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_6046586c88256.pdfIn PDF document text
    • http://899themes-demo.ru/339524318651uiri.pdfIn PDF document text
    • https://dazuzoboda.weebly.com/uploads/1/3/4/0/134017564/geruk.pdfIn PDF document text
    • https://wogifirum.weebly.com/uploads/1/3/1/0/131070377/09b8145450a30.pdfIn PDF document text
    • http://idealicacolumbia.site/sinetenuvopafonatokobazufa4qm8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mizugegixa.epizy.com/58725230197.pdfIn PDF document text
    • http://pamapubosozule.epizy.com/parse_error_android_apk_solution.pdfIn PDF document text
    • http://fobupozomorefiw.epizy.com/sugel.pdfIn PDF document text
    • http://vomotoboxavixot.epizy.com/ardaas_karan_song_mp4.pdfIn PDF document text
    • http://zujexig.epizy.com/addams_family_theme_song_piano_sheet.pdfIn PDF document text
    • http://sosefamip.epizy.com/10159781574.pdfIn PDF document text
    • http://viporikapopafep.epizy.com/tofakunixo.pdfIn PDF document text
    • http://mivapizin.epizy.com/deserinukapajabune.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_off0000eec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC4 5476 bytes
SHA-256: 0e161d04313e67175aff7a26933be61060b79c648c8c61f065fc020acc6e1ee7
font_01_sfnt_off0001018b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018B 10332 bytes
SHA-256: cf4e6d2765ad1a24ab2b3b47e551fa3e89a643c574ec9704b4d8089b2cb728ed

Open this report in the interactive analyzer, or submit your own file for analysis.