Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d53c06491744b8…

MALICIOUS

PDF

66.6 KB Created: 2020-11-10 11:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 57013cd7d5e1a6f57a667d4b039b5053 SHA-1: c40384708a25a3748b5984f091596c0b7df52493 SHA-256: 86d53c06491744b844cc34a52a3bbaa211b6e14849513e4dd4604813fca7a541
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://cctraff.ru/123?keyword=alto+s+lament+karaoke In PDF document text
    • https://jadekida.weebly.com/uploads/1/3/4/3/134349878/gujuxupo.pdfIn PDF document text
    • https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/0c920420b47968.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/2649279.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e26f9f-c89d-40fd-99bf-9b89f29064b2/fisica_y_quimica_3o_eso_ejercicios_resueltos_atomos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/409aa412-2f5b-4351-ad00-a0e403bf4ebb/zagudofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a206dae8-ebc1-4a3e-94ba-dc9e7a79178e/fragmentary_order_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ca1c75-a1a8-4ffc-bdc4-28bf0a963aff/tijobuvaragoge.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/active_directory_users_and_computers_windows_server_2012_r2.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bavizotigokurimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8740b6-0e8d-461a-aa06-c7c6bc7df821/eve_online_ecm_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/tree_of_life_scripture_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/nj_apartment_lease_agreement.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_off0000c9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CC 4884 bytes
SHA-256: 3d4e7011175822dd8ac20d006be5f82155da530401ab4b14fca0718f28f9c1f1
font_01_sfnt_off0000da50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA50 10572 bytes
SHA-256: 4e741d9e378f31f758d39958b0c6e68929fa41451c7f5ce0ee540a4b62070ee6