Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac039330f39b4a77…

MALICIOUS

PDF

76.5 KB Created: 2021-03-01 05:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 05da56003594bdfb7dcde34a6a78ab97 SHA-1: c5bd6e0c53f627816fe93dba679851b4bbfca255 SHA-256: ac039330f39b4a77100eaedb7834c8d07e8942b1e98f6d20a61d9ea13500275e
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://lozipotod.ru/wix?keyword=wauconda+high+school+library PDF link annotation
    • http://janorewaxeno.mygamesonline.org/libro_metodologa_dela_investigacin_cientfica_dr._julio_piura.pdfIn PDF document text
    • https://cdn.sqhk.co/zetoreli/jc8hc2O/neha_kakkar_song_ringtone_download_2018.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/washington_football_team_cheerleaders_video.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/dell_p2415q_macbook_pro_2019.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/casio_collection_mens_watch_w-735h.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/bulujono/94992302578.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/lopetalubotekekajuraf.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/columbus_blue_jackets_roster_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/makovimafusuxagupe.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/vegetoninejofupax.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/asvab_book_for_dummies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/ximokigelelamalugusuzot.pdfIn PDF document text
    • http://laxukumelukadut.myartsonline.com/23799558893.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/crayfish_dissection_lab_report_30a.pdfIn PDF document text
    • http://gonegexunu.myartsonline.com/how_to_use_a_ridgid_miter_saw.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_off0000ee74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE74 5456 bytes
SHA-256: 7fa6a0e8b939725da7558bfd371714b591174c54f2f43f41de7ff3852cf1d065
font_01_sfnt_off0001010b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1010B 10660 bytes
SHA-256: 9f39d7adb3d42db39c6c76d03b09103517313fe4bcf1001aacc3108143e24b5f