Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a780ee2e146466…

MALICIOUS

PDF

73.4 KB Created: 2021-01-21 08:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fc23d8e455536bb7d64f30b6aed0f1cc SHA-1: a8ad624fd365d8de409ab757a93abf3763daab44 SHA-256: 74a780ee2e14646674a7a9614bc03b748f46c181cb0a949ec32301e346d1b6c5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/square?utm_term=free+3+digit+addition+with+regrouping+worksheets PDF link annotation
    • https://cdn.sqhk.co/vujenibolo/hamihc3/idle_coffee_corp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459630/normal_5fadbb0808faa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387408/normal_5f9dabae9522e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5ff80ec06ef2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_5fad865320f9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/20109742923.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/java_7_update_45_offline_installer.pdfIn PDF document text
    • http://xegiseko.epizy.com/kenmore_sewing_machine_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/4481387780.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/android_9_wps_root.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/tamil_movies_2017_rekka.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/seattle_seahawks_injury_report_week_12.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/dibeserukumejusinib.pdfIn PDF document text
    • http://niworojuxine.rf.gd/event_agenda_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/chromatography_questions.pdfIn PDF document text
    • http://peworesafasar.epizy.com/xojenedewojasolaragorak.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/aashiqui_2_full_movie_tamil_dubbed.pdfIn PDF document text
    • http://luwegovufa.epizy.com/next_gen_imdb_parents_guide.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_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 5464 bytes
SHA-256: 3f9b700c28b00d92cc380effc5b86676162de1adb86fd0201ade019b20323404
font_01_sfnt_off0000f49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49C 10364 bytes
SHA-256: 98cf9c907fe18b5758bc7329fb4dfdc032c7929b083cb7fb5ff5ed0579fcfbbb