Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc004710893f4b42…

MALICIOUS

PDF

83.0 KB Created: 2021-03-24 14:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c642c741aa7701661e1ded58ce2af651 SHA-1: e17f2e6cbb3d274231a61a2fc6e4b28f0e2b62b8 SHA-256: cc004710893f4b42c0bb1408d8b8854f09ab331dc119cbe39b0cf063a4c69abe
126 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. It contains numerous embedded URLs pointing to link farms hosted on disposable domains, suggesting a phishing or scam campaign. The presence of external URIs and link farm characteristics strongly indicates the document's purpose is to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://druttle.ru/123?utm_term=basic+grammar+practice+test+pdf PDF link annotation
    • http://shop-onlinediscount.xyz/mothers_day_special_inspirational_quotes_in_bengalibbvod.pdfIn PDF document text
    • http://kittyplay.online/logotijukajawetewagxaia.pdfIn PDF document text
    • http://varistop.site/104962072261loz7.pdfIn PDF document text
    • http://forecast.bet/bedadewh496v.pdfIn PDF document text
    • http://lnstagramoriginal.com/sparknotes_lord_of_the_flies_chapter_2-4jthqs.pdfIn PDF document text
    • https://benadegerabo.weebly.com/uploads/1/3/0/8/130874398/529d4e76c545bf5.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/C8xghtp/329427667.pdfIn PDF document text
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/88b431c0ead.pdfIn PDF document text
    • https://wemubutuve.weebly.com/uploads/1/3/6/0/136090051/keranuju.pdfIn PDF document text
    • http://dezlice.ru/vizio_xrs321-c_remote0n2l2.pdfIn PDF document text
    • http://thedefenseforge.com/pafavunorafobovabalenofukn6x5u.pdfIn PDF document text
    • https://telisawe.weebly.com/uploads/1/3/4/4/134466193/tonezidazovuwutaveze.pdfIn PDF document text
    • https://fasanisig.weebly.com/uploads/1/3/0/7/130739318/lozeniwekif-vavekexogunaku-rodit.pdfIn PDF document text
    • http://podarokinsta.site/low_calorie_veg_food_list_for_weight_loss0peha.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/oEge9LN/39531539626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa77da4-58ee-4556-a421-29593c3ca3ab/vifavut.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/gegitabovegawujapimo.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/74987030102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/231d238c-2571-4286-a012-b4ac74a49f1a/noxoterijurotew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1938436-ef6f-46b2-96ea-fa5a921ac7e2/fimuwofuzupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eacbda0-1342-40f0-b3b2-03b2b0b7a57a/duvumerowomom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57034e32-8818-4928-b992-e0af9b748232/what_is_the_goal_of_strategic_family_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/general_journal_accounting_template.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_off000106ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CA 5492 bytes
SHA-256: 349a7057bdbda722937a898738337eb8a8a6a5c2e48fae5e00a7b9a060cf4f7d
font_01_sfnt_off00011961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11961 10928 bytes
SHA-256: dcd6306e3b6783bd1ac76de0aa855f74a74a8864ec84bc6e8d23d94263476b1c

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