Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aad764a0d073f96…

MALICIOUS

PDF

67.8 KB Created: 2021-02-22 21:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ff0c0ce6d8be5ef8d5d6362dbe86ea88 SHA-1: 7146118a1f7ce181c109f456748359e564e74fd9 SHA-256: 4aad764a0d073f965b12e8218103b5eb4749e33ce84ee6e904a345c00f471b25
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=how%20much%20can%20a%20ram%201500%205.7%20hemi%20tow PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460682/normal_5fdf93649a5a4.pdfIn PDF document text
    • http://erogan-oficial.site/free_business_card_templates_for_mac0ykmn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5fd88b87b7a1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530937/normal_5fcd8ee4bbfd8.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/BHibhaZ/68624112401.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/hiY4uSE/bandi_saroj_kumar_movies.pdfIn PDF document text
    • http://reduslim-ordina.site/pathfinder_magic_weapon_costtbbqe.pdfIn PDF document text
    • https://cdn.sqhk.co/kisilusotuke/Sae7Qhf/colour_lightly_crossword_puzzle_clue.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/12070798454im5g5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452599/normal_5fcefc2e5ac69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366306/normal_5fcefe3a9b557.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/hdStBrf/keleteguwexuluru.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/widofafane/27128873039.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/2772310873.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/72916864629.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_off0000cbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAD 5312 bytes
SHA-256: b2f679847849e85bfa385b619bcf746cdaafc6aec8ecfc305127950d6c467728
font_01_sfnt_off0000ddb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB9 10752 bytes
SHA-256: 117b9e2dd4a3f6c078cf771b2ab4982ada9dbfc8f0369c70d44a53b40142ebea