Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fc5096f458120c…

MALICIOUS

PDF

75.4 KB Created: 2021-03-19 16:32:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a48de7f4d54c1ce131ab0645b3a823 SHA-1: a45b5f3dc67728d534cf538f13fdcdccf0289787 SHA-256: 05fc5096f458120c863615c844473ddb3ed0990b02a86da30609ea3f7ceeea7a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a site offering a 'python full course', a common lure for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by redirecting them to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/aws?utm_term=how+to+learn+python+full+course
    • http://duzuxilobovix.iblogger.org/78113116622.pdf
    • https://cdn-cms.f-static.net/uploads/4471985/normal_601e544a6240a.pdf
    • https://static.s123-cdn-static.com/uploads/4466680/normal_6009942bf348d.pdf
    • http://werewinavif.22web.org/business_agreement_letter.pdf
    • http://pawusewi.sportsontheweb.net/fusionner_deux_adobe.pdf
    • http://pavawafupef.66ghz.com/learning_to_see_ebook_free.pdf
    • https://cdn-cms.f-static.net/uploads/4457839/normal_604367e619c92.pdf
    • http://wemuwetafivaxe.sportsontheweb.net/99166266744.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://latujetob.epizy.com/dafabirites.pdf
    • http://jesuwipefeg.rf.gd/15686531954.pdf
    • http://puligop.epizy.com/functional_training.pdf
    • http://wobazopaf.epizy.com/95769755970.pdf
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_7c2aff6c48114a66b32357ee2af07f92.pdf?index=true
    • http://xisisowotupom.epizy.com/33221356988.pdf
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_f3dcdfebb49a40c2934e7b8b50dd37a0.pdf?index=true
    • http://tejufujoketaw.epizy.com/margaritaville_concoction_maker_recipe_book.pdf
    • https://1639490a-f715-481e-9fb1-af38d332269b.filesusr.com/ugd/a59130_0304020a429f401fb8ad6ac79c4e7d47.pdf?index=true
    • 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_off0000e9c7.bin
70e9f41e3874c75e41e4a1d68793f0b786ca90453fac9861b44db2fe2dcd5e72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 5260 bytes
font_01_sfnt_off0000fbbd.bin
535f88c19dfe7ed5a56b4d1bb7e601a208dedac815b51d6ae684db2113ba3993		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBD 10684 bytes

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