Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbcc855694fc176…

MALICIOUS

PDF

70.1 KB Created: 2021-03-05 10:06:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c39e190271caf0bf840da3264c76db4 SHA-1: b9433ea164d13f19cbe9d5fadfab976e5cdfb099 SHA-256: 9fbcc855694fc1760dffb7e8386e32c30fca9668880ff18083b06e870e72dbbe
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/award?keyword=introduction+to+operations+research+11th+edition PDF link annotation
    • https://mesasijodise.weebly.com/uploads/1/3/5/3/135315214/damutumexorukupowi.pdfIn PDF document text
    • https://wafanipo.weebly.com/uploads/1/3/2/6/132695839/sotoxe_dinok.pdfIn PDF document text
    • https://cdn.sqhk.co/nebemina/higrLgj/67579768794.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478950/normal_60066df429ebd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475739/normal_5fc800977fbfe.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/ivIPjDO/bunny_bookends_uk.pdfIn PDF document text
    • https://zimuvudiredefux.weebly.com/uploads/1/3/2/7/132710782/bae4f15d81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_6020c952552ac.pdfIn PDF document text
    • https://bukodagunotul.weebly.com/uploads/1/3/4/0/134012399/088ecf9f039baaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474739/normal_603a0494f2825.pdfIn PDF document text
    • https://pasuwuzo.weebly.com/uploads/1/3/1/4/131438486/balomofawuwegokerub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450251/normal_60076b6dcf2db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375083/normal_5ff2d065eaf51.pdfIn PDF document text
    • https://baxufolodamiz.weebly.com/uploads/1/3/1/4/131408032/suponijijipalit.pdfIn PDF document text
    • https://cdn.sqhk.co/rabuvimi/iehfnDn/play_island_tribe_4_online_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486213/normal_5ff69bc2cca79.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/hejj3gc/how_to_disable_emergency_alerts_on_iphone_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494165/normal_603d6d5c7be2d.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/firigugixujotov/aradhana_movie_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/nafezibeja.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/ritenedatolalanuvumedad.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/77701829566.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_off0000d4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 5120 bytes
SHA-256: 60d34b2c07c0de22e6cd58b13f8618f34d66b66df3271d5c4f60e141768a72ac
font_01_sfnt_off0000e611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE611 10304 bytes
SHA-256: 0eaac0affeefe9421214bb0fc0ebd7742a54cd37becb41ece0c162f10c9f4e35