Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c77c882a3ecf51…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 02:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9ff4bf0ef1cf8744e8cdf73ce6a2e4df SHA-1: 0cb57b99c3f133eecd4ebb04732096a0a361504b SHA-256: 55c77c882a3ecf5179464dbe8826b3de45d97983c7f945fe648ac1f0d8dc7c90
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://zajinet.ru/wix?keyword=witchery+vampirism+level+10 PDF link annotation
    • https://cdn.sqhk.co/pavetikedur/z0Kgfha/subway_surfers_bus_rush_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/eqjbDgc/36949897244.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/Thcgeib/pokemon_ash_and_pikachu_wallpaper_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/49jgkhg/97629352853.pdfIn PDF document text
    • http://hookup154.fun/rejifaloxanjitwl.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/4Cxgiig/88233622750.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/didr9RX/missile_alert_sound.pdfIn PDF document text
    • https://cdn.sqhk.co/likamigid/jbKieid/56899563304.pdfIn PDF document text
    • https://cdn.sqhk.co/migefareg/jjvpjgZ/bakeb.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/cuajfsr/freeze_dryer_food_equipment.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404733/normal_6026627874f34.pdfIn PDF document text
    • https://cdn.sqhk.co/tibatojo/jjejaid/mortal_kombat_xl_xbox_one_price.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/Wp2hEjj/pelenivovupixodubu.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/X8jbgcP/movistar_play_descargar_peru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5fc63986ec20c.pdfIn PDF document text
    • http://mexicotop.xyz/supezibil7zqg.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/jokotaziweluge/shatter_me_book_1_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/wovexafameroketub.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/cheer_up_ep_1_eng_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/business_model_generation_full_book.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_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 5544 bytes
SHA-256: 8ced88e2f33a9cd97189fdf2fab91086a715035caf01efaf690ab6c01b3ecb14
font_01_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 10380 bytes
SHA-256: 32898cbd36ae24fc56fda8f87532fb2f7af0f0830fa78024fbf268afab13bfde