Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6b6ed24d7ddf59…

MALICIOUS

PDF

142.6 KB Created: 2021-06-07 21:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9223dc6090bb9f8d21d07b7217b97110 SHA-1: 7c83a00d87d4c7f29daa98890fcad473f63a3d4e SHA-256: 4f6b6ed24d7ddf5933a540c12b6b6e1eb95a98064f324c0afa7017111afa02ca
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that likely serves as a lure for users to download further malicious content. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pelibifir.ru/123?utm_term=eclipse+luna+java+ee+64+bit
    • https://static.s123-cdn-static.com/uploads/4387573/normal_5ffc8c7712672.pdf
    • https://cdn-cms.f-static.net/uploads/4447450/normal_5fd7de025647f.pdf
    • https://cdn-cms.f-static.net/uploads/4387816/normal_600deee5c7c23.pdf
    • https://cdn-cms.f-static.net/uploads/4376357/normal_6058534b3f49d.pdf
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5ff6921061cc4.pdf
    • https://cdn-cms.f-static.net/uploads/4451208/normal_606dce78cc20c.pdf
    • https://static.s123-cdn-static.com/uploads/4404490/normal_5ff23325349f4.pdf
    • https://cdn-cms.f-static.net/uploads/4454982/normal_6018a55666a4b.pdf
    • https://cdn-cms.f-static.net/uploads/4390643/normal_6030e6f6dfae5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jebodigezev.pbworks.com/f/41240447851.pdf
    • https://uploads.strikinglycdn.com/files/c2e222fc-45f4-4058-bdc1-d9addf1e2ca0/migavo.pdf
    • http://zobifel.pbworks.com/w/file/fetch/144616170/cracked_netflix_apk_ios.pdf
    • https://uploads.strikinglycdn.com/files/267ffe61-0ba9-4543-977c-812bde26685c/vuwonanukot.pdf
    • https://uploads.strikinglycdn.com/files/c2ce8f5b-d461-47ad-9886-a240012c81fd/transcription_and_translation_worksheet_answers_biology_corner.pdf
    • http://tosuvop.pbworks.com/w/file/fetch/144718710/girl_scout_brownie_making_games_badge_requirements.pdf
    • https://uploads.strikinglycdn.com/files/daf40d58-3b16-498a-8cf3-50dd377e91ce/tinaliwusaran.pdf
    • http://lopofemusun.pbworks.com/w/file/fetch/144520242/format_of_resignation_letter_from_society_membership.pdf
    • https://uploads.strikinglycdn.com/files/1b763aca-1cab-44a2-9561-c403d5b7553d/ejercicios_funciones_trigonometricas.pdf
    • https://uploads.strikinglycdn.com/files/43266caf-f990-4258-9515-33b414d2ecba/93253096600.pdf
    • https://uploads.strikinglycdn.com/files/71268711-8c4a-43a4-a877-04b9f6f1b093/pokemon_ruby_extreme_randomizer_gba_download.pdf
    • http://niluputevi.pbworks.com/w/file/fetch/144588372/human_genetics_concepts_and_applications_12th_edition.pdf
    • http://lulimogosan.pbworks.com/f/zilugemiwetenojusu.pdf
    • http://bijinim.pbworks.com/w/file/fetch/144756672/luxokoxirelotafugarilo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e916.bin
0facf67a2e5badd47f9428b5b026146fa955ab37f8e6a05e43352ab00aa9b728		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 84360 bytes
font_01_sfnt_off0001e5fc.bin
7bfcb73e14a89bda055445056a9c388546b23d9052dd3ce45e223de63df3284d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E5FC 5080 bytes
font_02_sfnt_off0001f75d.bin
a167eedc04812ab4732da3d938bc571a3e7dc74d819b551dae2b0c5bf2b6f588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F75D 10880 bytes
font_03_sfnt_off00021c7b.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21C7B 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.