Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a88ac2d2f2df41…

MALICIOUS

PDF

78.9 KB Created: 2021-02-14 05:49:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 77b259e98c311630b1992a3d27f31024 SHA-1: e171056f0d691176a3de2d363734d41b93ae5a06 SHA-256: b5a88ac2d2f2df4173709efb8a305f4c96b20dc07e09720dbda82c06b7660526
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wb?keyword=statin%20stroke%20guidelines PDF link annotation
    • https://cdn.sqhk.co/xiroxozalal/ijfaha9/highway_traffic_rider_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/r6PziaF/mamusobofifinusotarazi.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/ciejb8Z/giant_panda_bubble_bath.pdfIn PDF document text
    • http://gomededow.22web.org/16754982029.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/jdgh4hd/birthday_cake_with_name_and_photo_edit.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/e14gffW/wsdot_ferry_reservation_fee.pdfIn PDF document text
    • https://cdn.sqhk.co/jezofadu/6Znhjii/88863390114.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/bakoloj/91872945039.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/c_o_kancharapalem_songs_naasongs.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/zijuj.pdfIn PDF document text
    • http://wiwekire.epizy.com/sifigamub.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/pojokawuzolerotajafesig.pdfIn PDF document text
    • http://tugojan.rf.gd/xategewevefedobomupisi.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/android_9_hide_developer_options.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/ginubax.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/48475942444.pdfIn PDF document text
    • http://wuduzukatej.epizy.com/examiners_report_edexcel_maths_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/arya_2_movie_songs_in_telugu.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_off0000f817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF817 5160 bytes
SHA-256: 25a20e80cf10b09fa850b38ad84325a7a6d6ead5cbd43a95ffbce89ad2aeb665
font_01_sfnt_off000109b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B1 10940 bytes
SHA-256: 8be0e0b5d9525b24ecc2d4ca4f5143fc5f300bff2341ad0bb7b08abede9b5eaa