Malicious PDF — malware analysis report

Static analysis result for SHA-256 963f50de8c1228a9…

MALICIOUS

PDF

71.9 KB Created: 2021-02-20 22:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eaf2625984ee04f3e5662487a48a3565 SHA-1: d21f04eaaf7c915e406b82f3229d5cd26052c524 SHA-256: 963f50de8c1228a9c88c38fd01df7ea0aaebdf7db83fa956d6527b291d085d26
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wb?keyword=neil%20gaiman%20best%20books%20reddit In PDF document text
    • http://idealica-ufficiale.site/bandhukkal_sathrukkal_film_songs2zb3z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388842/normal_5fcc2118c1acb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475000/normal_5ff3dcd730294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500897/normal_601d588e0e0f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384035/normal_5feda34b01ec6.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/doI5hj2/classicraft_marine_works.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/Fgcyjb3/ping_pong_table_size_ft.pdfIn PDF document text
    • http://minuette.me/bajirao_mastani_full_movie_hd_filmyzillamv5k8.pdfIn PDF document text
    • https://cdn.sqhk.co/bedepekemat/NdheBid/carriage_kia_woodstock_georgia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_602445c4e5668.pdfIn PDF document text
    • http://limaxinsto.xyz/algebra_worksheets_for_grade_8_withhj5x3.pdfIn PDF document text
    • http://xteenware.online/jurassic_park_operation_genesis_pc_download_utorrentfto7s.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/wazagidonux/rowemotogo.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/burger_master_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/daxexenoj.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_off0000de27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE27 5316 bytes
SHA-256: b059e372c51bbb0a5f233f96bfdc6e1e97f05f3c5027f3627c87ec11fcba9b04
font_01_sfnt_off0000f027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF027 10240 bytes
SHA-256: caeaf4087747c89c535c534f018d3909789e23655d45bf271bdb52b720786079