Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb6a39ef3377eb4…

MALICIOUS

PDF

76.2 KB Created: 2021-02-14 13:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 419dbe8b97c0ebe8237c8480302d7d40 SHA-1: f1c981f181de708329d603fffc207ccd091b2a01 SHA-256: bfb6a39ef3377eb45a0e4d7631930d8b0c38bd57bef7ddd8d9a297d95b940d16
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://jottigo.ru/wb?keyword=gbf%20bahamut%20weapon%20guide PDF link annotation
    • http://wavulefarunatev.iblogger.org/bigepete.pdfIn PDF document text
    • http://hempmap.ru/vadozerovaruvib1ai4.pdfIn PDF document text
    • http://luminar4-download.xyz/stickman_spider_rope_hero_gangstar_crimeqent1.pdfIn PDF document text
    • http://mmmuuuue.space/related_products_woocommerce_templateub0x0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368742/normal_60044b61e4fcb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiwusumusi.rf.gd/descargar_hello_neighbor_hide_and_seek_android.pdfIn PDF document text
    • http://bivuraxut.rf.gd/breakup_shayari_girl.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/cg_comedy_natak_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/73803537325.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/tasekepirok.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/kitchen_cooking_utensils_answer_key.pdfIn PDF document text
    • http://toramowajo.epizy.com/91840914850.pdfIn PDF document text
    • http://fobiwuna.epizy.com/86258243572.pdfIn PDF document text
    • http://jajabidabewaw.rf.gd/biomes_o_plenty_minecraft.pdfIn PDF document text
    • http://votarim.epizy.com/latest_calculator_for_pc_free.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_off0000ea91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA91 5412 bytes
SHA-256: f5ce39209cf674637e570f63cc2527c1f7901b4ef1ec7a5f7a99073a5a478bfd
font_01_sfnt_off0000fcef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEF 11284 bytes
SHA-256: ae70b3b123127e716934e0f64b72bace3e252f4e647a43f31829559ce64e5619