Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbae075fdd09a797…

MALICIOUS

PDF

43.9 KB Created: 2020-11-06 06:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 456f3eebfcee60628f6228785679073a SHA-1: cc9802f9c4fdbe4543b5dee7c43559369507c485 SHA-256: dbae075fdd09a79764f465603d7b74ddd1280d9cb21e068517f0e01f510f3ab9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/strik?keyword=were+fake+drivers+licenses+found+in+chicago In PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/8488884.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/fosibotip.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/bajuse/united_boeing_737-900.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/trieu_barber_shop_fairfax_va.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/kijegenagiloveximelunuri.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/rapufoxagima.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/ecosystem_productivity_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/85028792880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/610dee7d-7487-43dc-a066-988ade738221/55008087308.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/xajenagasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946377af-8e98-440c-b29b-d484ce574f3a/proje_hazrlama_dersi_yazl_sorular.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/best_iptv_2019_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/naxonalodiwefajoverawixi.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/goldendale_primary_school_wa.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_off00006db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 5420 bytes
SHA-256: cffdb03c76017a859507c347664138be1405de59eca5de97ff28d32b32673882
font_01_sfnt_off0000802e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802E 10088 bytes
SHA-256: 49c9c74a2e83d5b679c8da4883f40c056bd7748a30a399772473adae690bec80