Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4868c646531069…

MALICIOUS

PDF

69.8 KB Created: 2021-02-18 04:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b5357b5cecedd52117693742cab4deb SHA-1: c9f35be03fd0a37583081abc42abc6188a8e61a2 SHA-256: 9f4868c6465310695e41a9574daa5396756e76b7e36249731e629a7fe32f52fc
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://druttle.ru/wix?keyword=pig+heart+dissection+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/pemofirojez/hdicsW3/my_talking_kitty_cat_download.pdfIn PDF document text
    • http://sikutamilom.iblogger.org/hemorrhagic_stroke_management_guidelines.pdfIn PDF document text
    • http://dobogoj.iblogger.org/potezixinofudijavepe.pdfIn PDF document text
    • http://kikovetademu.22web.org/wamuwo.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/oheLijW/space_rush_game.pdfIn PDF document text
    • http://nutupiwerumad.66ghz.com/vpn_server_free_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476927/normal_6009f4c3eec6c.pdfIn PDF document text
    • https://zofawuzi.weebly.com/uploads/1/3/5/3/135323082/lemesemifolotujozi.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/dRhijiT/bird_screaming_meme_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sojisij.epizy.com/26025455454.pdfIn PDF document text
    • http://timodetunidup.epizy.com/farberware_air_fryer_toaster_oven_rotisserie.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/badoraliwilovok.pdfIn PDF document text
    • http://pagitewuzowika.epizy.com/beintehaa_serial_title_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/hereditary_hemorrhagic_telangiectasia_management_guidelines.pdfIn PDF document text
    • http://losopokatefoxot.rf.gd/salijugetut.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/adjacency_matrix_representation_of_graph.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/exercise_diary_template.pdfIn PDF document text
    • http://xemubekimivimed.epizy.com/xujosodujezaka.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_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 5324 bytes
SHA-256: 6914d3c8cc4dcb579be5029c6f83bf3dffb3b555e8f4cd27d91ad40e6433bc9c
font_01_sfnt_off0000ea4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4C 9292 bytes
SHA-256: 8d64e8bb9819ec8c0e16bad93cc74bcd9ffc2a7348d2d41c4cc62310a34c5dc5