Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3e535fd2e79425…

MALICIOUS

PDF

69.0 KB Created: 2020-12-24 06:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0fdcd4474c805a8f7cfa0377730f634b SHA-1: bc8d74e28ae65c4b577bd83b8ebdce8384143827 SHA-256: ae3e535fd2e794253d0773b121de2adff6ddfd7def540295043a789e61d860d5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/strik?utm_term=dj+player+music+mixer+pro+download In PDF document text
    • https://cdn.sqhk.co/zipodumup/bjgSuph/zelda_parallel_worlds_remodel.pdfIn PDF document text
    • https://cdn.sqhk.co/kefexunas/jjjgVie/super_mario_bros_nes_game_genie_codes_invincibility.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/54fd334f-7fa9-4d55-846e-f5331bbc095e/mokuvijilofijibuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db17ff3e-e7b3-4b28-bf07-693a20a9c9ee/menodaxixutelatud.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/98299888984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d13acf5-3d74-44db-b33d-a19e3f9eb78d/kigukadikufunimilef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e5d0c7-8476-4ab0-9247-c41e0c2229d7/nelson_mandela_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/tratamento_de_anemia_falciforme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc1654d3-1eab-4997-8fc3-086a52507ba9/vanafufekuvuwufupinewepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c9f3c5c-46f1-4e9f-b019-da73ef92e40d/gun_script_roblox_r6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102310e9-0c7a-47fe-a9b0-336a5bf65362/50659437217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b177e7-8962-4c6b-9372-92a9bbda25a3/xaxirunavamurigosuvokane.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/capites_de_areia_completo.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/calorie_counter_app_nz_android.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_off0000cf5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5A 5556 bytes
SHA-256: 86e939f4d686e6ae2f5e28280c3ebf83ac5e060524d4ad072f4af4fa1342ebc2
font_01_sfnt_off0000e252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE252 10912 bytes
SHA-256: 0aee6c0096a9cb2ef376359b79f303217e5bb47c55b2e340a64b72882989f90a

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