Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c03a03dcfd140e9…

MALICIOUS

PDF

69.5 KB Created: 2021-02-09 16:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 057faffc9b37a857467b1a23de26d3ed SHA-1: 1a94035fec1628c952782aab44b941d4778d468d SHA-256: 1c03a03dcfd140e99efc6e706b5c7919c4d635ece3755e3dbf6bc73dd36db134
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://seumenha.ru/wb?keyword=letter%20address%20format%20attention PDF link annotation
    • https://cdn.sqhk.co/lowilufape/wgiihMz/66190284874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413693/normal_6018a042eb066.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/aigiKRg/droidcam_obs_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pesofesidoke/fZjjFhj/switzerland_coronavirus_travel_from_uk.pdfIn PDF document text
    • http://dompodklyuch.com/neon_lights_wallpaper_for_phonest80dj.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/jrohigh/burger_king_coupons_codes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489057/normal_5fd03dd9b4288.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/bNhcXje/gameboy_sp_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/ketegobuto/jywhcIl/loleb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417675/normal_5fffe9251c7fd.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/juzewojavomofew/microsoft_excel_date_format_day_of_week.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/avengers_assemble_tamil_dubbed_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/shankara_song_baba_hansraj.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/childhood_song_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/87826671380.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_off0000d7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B1 4964 bytes
SHA-256: a11d27fd85da2484cce988c4ef88dc6550a5cb317c010e9cd63a658d5b73ba99
font_01_sfnt_off0000e883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE883 9544 bytes
SHA-256: 6dfdbd1b8e948e118b3aab3a65f487d4fb3caea5429421eb315108e4aed97f7f