Malicious PDF — malware analysis report

Static analysis result for SHA-256 0760f10109e6964a…

MALICIOUS

PDF

99.8 KB Created: 2021-05-10 20:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5c7518c755b298ce38b72e2f56d0b542 SHA-1: 9157760a7281d7ce0a1c0dfa52c25e8949d15626 SHA-256: 0760f10109e6964ae3a86b39c4784f00f7da672bdee45684badbcf2792accfd9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, many pointing to disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for further exploitation. No scripts were extracted, but the PDF structure itself is used to host and present these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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.
  • 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/strik?utm_term=sacrosanctum+concilium+summary PDF link annotation
    • http://laxogapajoze.getenjoyment.net/branches_of_philosophy_and_their_relevance_to_education.pdfIn PDF document text
    • https://cdn.sqhk.co/gakilofod/cE6ghav/war_robots_test_server_free_play.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/EihxKgc/nemawuniresixemeje.pdfIn PDF document text
    • https://cdn.sqhk.co/vizelupavew/igiCUbn/the_great_courses_guidebooks_download_free.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/honda_zoomer_x_parts_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/cGuhcgi/suxel.pdfIn PDF document text
    • http://laditosos.iblogger.org/85625832953.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/15003419708.pdfIn PDF document text
    • http://xefawojuj.mygamesonline.org/nasugijesuxomorigisi.pdfIn PDF document text
    • http://losopefopamusoz.sportsontheweb.net/42125770056.pdfIn PDF document text
    • http://bekusasodix.iblogger.org/definicion_de_energia_solar.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/beps_action_plan_1.pdfIn PDF document text
    • http://judupebe.getenjoyment.net/wiwakowodapoziduvetibes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gavojomizam.epizy.com/my_aged_care_assessment_manual_march_2018.pdfIn PDF document text
    • https://30de3caf-c510-4ce9-8691-b8280dc60d9b.filesusr.com/ugd/4980ee_2c586f454d744e44905f5786873e1053.pdf?index=trueIn PDF document text
    • http://temodorofeg.atwebpages.com/describing_people_s_appearance_english_exercises.pdfIn PDF document text
    • https://d5e9a058-cbdc-4968-ba72-30cdbf1e36a3.filesusr.com/ugd/9cfd0a_acd79d52f0074990a3598b0f34d1bdb4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded3637c-c687-4b97-a8f2-6829cf500d4c/smartcode_888_master_code.pdfIn PDF document text
    • https://1cd0d4d5-11d4-440c-a307-81f73801f601.filesusr.com/ugd/f0e51d_c9019d456f344081905ffc4378e8e75b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4d6f3ef-f708-49fa-9678-8198fec8fdfc/sewawavibodubinema.pdfIn PDF document text
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_f54c8c9f18314612aec5cfba01fe7e5b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/75f418c3-06ad-45ab-acb6-91a0b9d5db9f/670341097.pdfIn PDF document text
    • http://punazujekir.epizy.com/fluid_dynamics_and_mechanics_difference.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472261a6-d6ef-4249-8d5a-57662eb147db/dragons_fire_and_ice_full_movie_download.pdfIn PDF document text
    • http://tuzuxutetug.atwebpages.com/88346945735.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CDB 4912 bytes
SHA-256: 7179ba7d1bc13dde29c41ab672280fd00c76403eb2c38e92637fbccd2046a64b
font_01_sfnt_off00014d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D64 11256 bytes
SHA-256: f1789bc7cd89dc2900205f1252a2a2a8cc9ac2cbc941668835d45cd814f7faad
font_02_sfnt_off0001735a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1735A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3