Malicious PDF — malware analysis report

Static analysis result for SHA-256 5911d1e80e9bf49e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-16 02:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: dd4ec2cc828724772d7a7669e3bedf8a SHA-1: f121d36b9a318a3e4fdf7fcfb8709d8d8394ebb1 SHA-256: 5911d1e80e9bf49ee8de3d70dcbc9e29859055478eb782398cd3c643b1dec8e7
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'vilenefex.ru', which is likely a malicious domain used to host or redirect to a secondary payload. The document body, though heavily obfuscated, appears to be a lure related to lunar phases, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=how+to+define+a+waning+moon PDF link annotation
    • https://cdn.sqhk.co/nimuxugemu/dAQvoky/free_netflix_trailers_tv_shows_and_movies_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_6041b7902c314.pdfIn PDF document text
    • https://cdn.sqhk.co/deguxigu/dEgd5ja/feviwosolanabedufigijabit.pdfIn PDF document text
    • http://complect-tech.ru/tesla_model_3_long_range_vs_model_s6tq0p.pdfIn PDF document text
    • https://cdn.sqhk.co/desixurate/hhghxhc/arundhati_bengali_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/hcSPUge/minecraft_pe_massive_village_seed_1._14.pdfIn PDF document text
    • http://legendarycraft.ru/46237676744o5dr2.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/jeEha2h/spiral_permanent_vs_perm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_6009796806ff8.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/675b4958-6002-415f-8007-f18a8536b9e7/wunazozub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9edf7a24-515e-441b-b667-887121ac9e96/77761558861.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/28657403793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39702f5-9dba-4939-8bea-a9ab11ad2daa/how_do_you_make_someone_fall_in_love_with_you_wazifa.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/who_are_the_gatekeepers_of_social_media.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/adagio_cantabile_piano_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2b7ab7-5565-4d3b-be35-51776b537d45/jozotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49b6ca8-c97a-4055-8839-6b669b415505/25996532665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd28b19-454f-43de-bded-5f580ec55544/what_is_it_called_when_you_combine_two_words.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/jejavuwukepepafidulik.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/the_lord_of_the_rings_the_fellowship_of_the_ring_extended_edition_vs_theatrical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/582d85dd-17b0-44f5-b375-cbdb461be95d/5477088883.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_off0000ef18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF18 4976 bytes
SHA-256: 1dcc424c7cca3c1c00d4f100ce3e62ff421277106a896881f090a546508efbed
font_01_sfnt_off0001000b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000B 11012 bytes
SHA-256: 38ca40651b7514695adef0f73dfdf4de7bc3dc4a761b5c0f812ebe503fc9c053

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