Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41082f7c0def114…

MALICIOUS

PDF

74.8 KB Created: 2021-03-11 13:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3658fbca8fd816e7e9d444a98349dea1 SHA-1: 4ac415d4549eab9a9af150b2e748f9ddac2bf0c7 SHA-256: e41082f7c0def1147f72fdd363697895e2daf5a779d5e1f2057a798217cbe0c2
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs that lead to external sites, one of which is associated with a phishing lure for movie downloads. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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=captain+america+first+avenger++filmywap
    • http://swiss-gear.store/gadabonavasifetubomuwx0jc7.pdf
    • http://qunit.space/vefunisolujfemd.pdf
    • http://ru-en.xyz/mru_ejercicios_resueltoszqqez.pdf
    • http://thesimplycompleteseries.com/nts_answer_key_2019_lumhsylbda.pdf
    • http://filanion.online/pukepilobuliworejepp240e.pdf
    • https://cdn-cms.f-static.net/uploads/4416940/normal_601432b1cff80.pdf
    • http://namedaun.fun/gartner_studios_template_6140739ore.pdf
    • http://dombitarf.ru/31836199571m87mr.pdf
    • http://ens-pictures.ru/57623524904x0kpz.pdf
    • http://net-klientov.ru/numilovosoux354.pdf
    • https://cdn-cms.f-static.net/uploads/4423136/normal_6023d7ab1f125.pdf
    • http://reduslimitalia.site/fair_mormon_pearl_of_great_pricewf2dx.pdf
    • http://hydrofthol.space/best_app_for_learning_english_speaking_in_indiakakk0.pdf
    • https://cdn-cms.f-static.net/uploads/4384154/normal_5fd3aec929b04.pdf
    • http://endi-itali.space/jimojurios5ba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ac5346b5-202d-4746-ba3d-b6fea56b8cd3/nazaduporaduzimurokusagu.pdf
    • https://uploads.strikinglycdn.com/files/b8407ced-7017-454b-89c0-be862d5c255e/lubasodogukedomupavafibo.pdf
    • https://uploads.strikinglycdn.com/files/24e2c505-8884-4f6a-b6e9-6570c095c990/31961225260.pdf
    • https://uploads.strikinglycdn.com/files/d7242040-4be4-431a-a819-3de5b8e37db6/kadulonetewufibamaxebod.pdf
    • https://uploads.strikinglycdn.com/files/8159dd2c-ed6a-405c-81ef-c3ce07346c75/4094548175.pdf
    • https://uploads.strikinglycdn.com/files/ec9adf20-7b38-4401-a1cb-9bffc8ac4d13/jabodujinizer.pdf
    • https://uploads.strikinglycdn.com/files/bf1caf14-5a3e-48f0-8828-390b3062936d/every_mans_battle_workshop_2019.pdf
    • https://uploads.strikinglycdn.com/files/2b13c254-b397-4c15-80c7-3a02e4f3db85/what_are_the_475_tax_deductions_for_home_based_businesses.pdf
    • https://uploads.strikinglycdn.com/files/74889547-2d43-4bd0-83c2-156b3729b446/gawuwiwagazuwetixok.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4cb.bin
04b13d964c13f2e47f7aefd0d69f13472d540f87b2ba1c254c88640df86738a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CB 5492 bytes
font_01_sfnt_off0000f784.bin
c5124e5c2ffc5ae66f8ebe1e8df73a3c80a566f373f967a96ec699e969410457		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF784 11296 bytes

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