Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf12f5446d814cd9…

MALICIOUS

PDF

73.4 KB Created: 2021-02-24 03:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3d811568cea57302252b1b68bc27b67b SHA-1: 787469ce1ac81ae9a35ac82d46e57fe3a1e36c6a SHA-256: bf12f5446d814cd915a6baa5d2777d4cd8989bb158118b7cabfcdbac5ad948c0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=facts+about+group+3+on+the+periodic+table PDF link annotation
    • https://cdn.sqhk.co/nolagutotato/44hd5gh/sputnik_v_stock_name.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/pfibgdL/nail_art_brushes_amazon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486042/normal_5ffe920fb9ef8.pdfIn PDF document text
    • https://cdn.sqhk.co/duzokezubeka/o2gigiB/95736488449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500669/normal_6025ba9146329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412999/normal_60333b8536b27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_5fdc17957899b.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/jjeghhe/american_truck_simulator_download_free_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/iggfGgd/deezer_music_player_songs_playlists_and_podcasts.pdfIn PDF document text
    • https://cdn.sqhk.co/mogilirexexa/jcnjjjd/biluzobeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_6024b55f36dcf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xiluwudikipo.epizy.com/11565900672.pdfIn PDF document text
    • http://nuvupobo.rf.gd/76363256028.pdfIn PDF document text
    • http://jexukavelewin.rf.gd/zozajaxaworeruzitilu.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/nozebomiwaxiti.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_off0000e28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28B 5592 bytes
SHA-256: 00e1a97eb151d750f1307611f77a2187f61238c524144176040cc97dc230f1fc
font_01_sfnt_off0000f580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF580 10284 bytes
SHA-256: 0b7995fd91bb2a8fb0b66d72df8968a90887b4b3c8178392014fbb6d5221fd4f