Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6e0caf88cb309d…

MALICIOUS

PDF

86.2 KB Created: 2021-03-13 14:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7e7ed914d65cf6941dbcbad2b0cb13f9 SHA-1: 111204c5b0af49e48e00ebb2005d36c27a150b0a SHA-256: ec6e0caf88cb309df7b90b9964434ff826c4e3e81194782e2960fe5ab974a87e
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 0.9992

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://resalured.ru/award?keyword=honey+bee+products+and+their+uses+pdf PDF link annotation
    • https://cdn.sqhk.co/kawonidoza/Ojeiggf/just_dance_apple_tv_not_working.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379854/normal_5fdced5859f7c.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/jc5waha/tirarawemixibojunul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450876/normal_5fface8b28cb3.pdfIn PDF document text
    • http://zuxuvikewi.sportsontheweb.net/rorapivunadaxuzoti.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/bjjYEqs/credit_card_machine_for_iphone_x.pdfIn PDF document text
    • https://cdn.sqhk.co/mekoposa/GhgeDTt/lufogudizurifa.pdfIn PDF document text
    • http://nitiwomifigurod.mygamesonline.org/tamakozakas.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/jhjjzgi/84682204158.pdfIn PDF document text
    • https://cdn.sqhk.co/xavipinav/jjjghjg/recorder_songs_baby_shark.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/21134385154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_603dcda83d160.pdfIn PDF document text
    • https://cdn.sqhk.co/leruwexikud/TjckhgY/14083651713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379959/normal_5fe52b32db9a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_6029226784214.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vubukenod.rf.gd/wosomatimawiberilugunix.pdfIn PDF document text
    • http://roxegubipav.epizy.com/mensa_test_questions_answers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/89802701941.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/kodazosedasujukivasaxav.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/2377816361.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/akira_manga_descargar.pdfIn PDF document text
    • http://latuwukatagowa.epizy.com/spark_baidu_browser_button.pdfIn PDF document text
    • http://vedirananu.epizy.com/calendario_biodinamico.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B1 5296 bytes
SHA-256: 997f4a73630accc6e9e6c951890cc5fcec57b39662a95da226847669591a3f3f
font_01_sfnt_off000117a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A0 11164 bytes
SHA-256: 8a814624e5e7e8178fc579cb54b02115d5cc9143a6fd851820ee8af9ec30a56c
font_02_sfnt_off00013d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D25 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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