Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f5d919b2897d2e…

MALICIOUS

PDF

71.2 KB Created: 2021-01-20 20:56:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b706836556fd0b4270c69cd91ccd202a SHA-1: b8875647530023a3e4e6dfb8749ff85904abb0ac SHA-256: 99f5d919b2897d2e7f0e06bd33f472f231730ecbf6384fb4e266c44b48f508ca
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://maypoin.ru/wb?keyword=animal%20crossing%20pocket%20camp%20villagers%20list%20levels PDF link annotation
    • https://site-1174092.mozfiles.com/files/1174092/pipumapuj.pdfIn PDF document text
    • https://site-1171776.mozfiles.com/files/1171776/19951919743.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/djbGjhT/22327721997.pdfIn PDF document text
    • http://nepifenimet.iblogger.org/economist_magazine_free.pdfIn PDF document text
    • https://site-1168340.mozfiles.com/files/1168340/xamejekuxukudezunebebi.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/DChiNYv/jodifopasanaro.pdfIn PDF document text
    • https://site-1173482.mozfiles.com/files/1173482/zebra_gc420t_barcode_printer_datasheet.pdfIn PDF document text
    • https://site-1203447.mozfiles.com/files/1203447/gewatiro.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/hjeTieW/81721858117.pdfIn PDF document text
    • https://site-1177340.mozfiles.com/files/1177340/junior_scholastic_answer_key_april_1_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/gdAb7ie/31200281248.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/paropabaru/que_son_las_bibliotecas_virtuales.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/35867673623.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/azhage_azhage_azhagin_song_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/resawubafuwubadol.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_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 5368 bytes
SHA-256: 923b277a9d69bf37c2495e55e3b6e9dde2007b8ec0ecd141bbf0a5958b7ff5b9
font_01_sfnt_off0000ebc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC8 10468 bytes
SHA-256: bdedcb2ee7b57325360ca2ec2c8a912504900c0b9688bf43c48e4d53171e9901