Malicious PDF — malware analysis report

Static analysis result for SHA-256 24db84fbe05edd1e…

MALICIOUS

PDF

72.8 KB Created: 2021-03-04 09:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d4eaf48ed3364b3dcd88961478266110 SHA-1: fb52fadd877e0e7805b3e8f892a05327ecd32619 SHA-256: 24db84fbe05edd1e2bd4b2183dd17d2bc8d3a8a5d115606b80fec7f326f9cf04
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://mezovuduw.ru/award?keyword=new+air+force+1+plane+cost PDF link annotation
    • http://vash-komfort5.ru/17082186543ks9hr.pdfIn PDF document text
    • https://cdn.sqhk.co/nofoxanu/hhojjhe/happy_birthday_cake_photo_for_boy.pdfIn PDF document text
    • http://hr-insider.com/stephen_hawking_kidsw7pyf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_600d907dadef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393029/normal_604020d3d2b95.pdfIn PDF document text
    • http://berkeciftci.net/how_to_fix_my_gas_fireplace28eu0.pdfIn PDF document text
    • http://mavitrade.com/vemebe8hdt2.pdfIn PDF document text
    • https://cdn.sqhk.co/denirinodo/ihFRFTl/monster_jam_steel_titans_2_wiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_600278e45e924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_602d79dfd0da8.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/pojikovewijeja/training_attendance_record_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/sketchup_layout_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/26770962361.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/61701814200.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/45116460893.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_off0000e1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BC 5120 bytes
SHA-256: bb6afb8998a3f27ef0ffca675142ba6873705c656ad4246b8fee28a7dcf3c6f6
font_01_sfnt_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 10204 bytes
SHA-256: f2a2c6840e41b205eb08d9c44870b653b5ea3cad4296a6650879d42cabc62bfb