Malicious PDF — malware analysis report

Static analysis result for SHA-256 253d50983edd64ab…

MALICIOUS

PDF

66.8 KB Created: 2021-02-28 03:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6e8653e305fa1e07d93056e2db26714f SHA-1: 090cb0175d485263993efa8bd9164c30d609e11f SHA-256: 253d50983edd64ab3084d512ab3cceb60fcc723aa2f658b48a77699fbd951205
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=tu%20puedes%20sanar%20tu%20vida%20louise%20hay%20libro%20pdf PDF link annotation
    • https://negofajosodin.weebly.com/uploads/1/3/5/3/135314147/452583f70d.pdfIn PDF document text
    • http://ganutaragifak.22web.org/bienestar_biopsicosocial.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/shfjcLl/invasion_of_poland_ww2_timeline.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/jinabom/44911384629.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/aesthetic_powerpoint_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/62865220346.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/13046712946.pdfIn PDF document text
    • http://zotinulimoruv.rf.gd/jugezedobadiromiwadexajet.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/68360246820.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/calendar_2018_template.pdfIn PDF document text
    • http://livunus.rf.gd/yo_whatsapp_app_new_version.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/72042226770.pdfIn PDF document text
    • http://zomimek.epizy.com/nikon_d5200_battery_charger_type.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/dragon_nest_main_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/juxenedu.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_off0000c9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E3 5380 bytes
SHA-256: 3788a72b24276c988e5e911df1b378a5a764c60b7b6c3b537e7009fc84c992ea
font_01_sfnt_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 9980 bytes
SHA-256: 5741ec3dcb1143880381af0830c016842339af56b266b25119cd612ca36dd8c3