Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c96760f9767af85…

MALICIOUS

PDF

90.1 KB Created: 2021-05-10 18:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d52e79af464b9be4158ab4532393511f SHA-1: 7ea64fda8f332f182f213040360cb49e128f094b SHA-256: 2c96760f9767af8598f0a517348a099807e18ddbc3348a49d2c1647b45c3201f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing site, disguised as a free ebook download. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://jumiwimov.ru/strik?utm_term=libro+el+millonario+instantaneo+pdf+gratis
    • https://cdn-cms.f-static.net/uploads/4489607/normal_6047a17b5003a.pdf
    • https://cdn.sqhk.co/dowepigakaw/jaieehf/world_war_iii_movies_list.pdf
    • https://cdn.sqhk.co/wadupaxi/hibhfge/puxavamiwilexugesudogob.pdf
    • https://cdn-cms.f-static.net/uploads/4443619/normal_5fdb56fc68fcb.pdf
    • https://cdn-cms.f-static.net/uploads/4459914/normal_6060578d0b819.pdf
    • https://cdn-cms.f-static.net/uploads/4446492/normal_6054ca3151591.pdf
    • https://cdn-cms.f-static.net/uploads/4370064/normal_601611e44e8ad.pdf
    • http://tumibejum.iblogger.org/netflix_expired_meaning.pdf
    • https://cdn-cms.f-static.net/uploads/4369174/normal_601db707b42a0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/52f490df-bd23-49a9-b9e6-46e9340b8c20/lord_of_the_rings_4k_best_buy_canada.pdf
    • https://uploads.strikinglycdn.com/files/92f16f35-dc63-42a6-ad75-849c8495d79b/tiwowasagawuratawinelu.pdf
    • https://s3.amazonaws.com/tubupejevomo/rufene.pdf
    • https://uploads.strikinglycdn.com/files/c61b70cc-ddcd-422a-bd90-c06590f0d341/46631435696.pdf
    • https://uploads.strikinglycdn.com/files/4a478b5d-faec-42ba-9501-e614483969eb/vukazanimuwotolozawafotan.pdf
    • https://s3.amazonaws.com/fekife/fewiwipu.pdf
    • http://zejenideve.rf.gd/essential_chemistry_textbook_for_senior_secondary_school.pdf
    • http://xagonerokivuj.epizy.com/jupejipigimafuro.pdf
    • https://s3.amazonaws.com/tolivajupeku/is_charger_rt_awd.pdf
    • http://zozadugaweguj.epizy.com/actine_control_bula.pdf
    • http://peronilekovo.rf.gd/kexabebojawori.pdf
    • https://uploads.strikinglycdn.com/files/b9df850a-4306-4a96-b88d-a78d66caee7f/christmas_carol_songs_mp4_download.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100a4.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 6744 bytes
font_01_sfnt_off0001118b.bin
810944ec453129b6f3c81ca5c9d8b53086e7b48cf8667aba5f465fd2bcb4c618		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1118B 5232 bytes
font_02_sfnt_off0001232b.bin
8f03cca71a140e446ff445f7a1ba27d215c8d190bb80ee052772dd5d3df93f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1232B 12252 bytes
font_03_sfnt_off00014a9d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A9D 4324 bytes

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