Malicious PDF — malware analysis report

Static analysis result for SHA-256 73bff8964f0cd38d…

MALICIOUS

PDF

82.4 KB Created: 2021-05-17 16:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56ed6ec8bdd657ed04ce85c601ca2322 SHA-1: db7fcf1a6dc82db4e0a4489f9dcb9b35a7b25982 SHA-256: 73bff8964f0cd38da4b16a4e9cfc9fe9b496e795ff003120bd87e7532e22a74d
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that leads to a phishing site, disguised as a strategy presentation. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://resalured.ru/strik?utm_term=enterprise+architecture+as+strategy+ppt
    • http://xogunajeraxuda.mywebcommunity.org/radosupefibifulu.pdf
    • https://dawipufa.weebly.com/uploads/1/3/3/9/133986453/sotekin.pdf
    • http://mignonette.space/xokibelufakanudaj8inz.pdf
    • http://littlenat.space/lesson_plan_format_samplevk0rv.pdf
    • http://mevesepegubisis.scienceontheweb.net/watermark_acrobat_reader_dc.pdf
    • https://zaradokoz.weebly.com/uploads/1/3/4/6/134656685/6199575.pdf
    • https://lopowizuxo.weebly.com/uploads/1/3/4/4/134438001/latesijova-fuzelani-gexuvevenu-debiwikorixo.pdf
    • https://tazizepi.weebly.com/uploads/1/3/4/4/134439401/9715613.pdf
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/mugulit_xugepema_kegafekoza_nisuf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/305ae7e6-ffc3-4a86-a18c-3fce5df8e67d/35810322856.pdf
    • http://kaluzepo.rf.gd/47217746850.pdf
    • https://uploads.strikinglycdn.com/files/65a35c22-48e3-404f-abc4-2048a0931a14/tascam_dr_40x_zoom_h5.pdf
    • http://derazikabulode.epizy.com/blood_and_guts_download.pdf
    • http://zakivijojinikij.epizy.com/94601185173.pdf
    • http://wivoruremuwun.rf.gd/strangers_on_a_train_book_cast.pdf
    • https://s3.amazonaws.com/xovekolamoxe/devextreme_popup_title_template.pdf
    • http://xizanisud.epizy.com/gramatica_inglesa_traduzida_em_portugues.pdf
    • http://xusapibu.onlinewebshop.net/examen_ser_bachiller_2020_costa.pdf
    • https://s3.amazonaws.com/zidenigad/ritiritaxoxibonamobo.pdf
    • https://s3.amazonaws.com/sajezife/how_to_bypass_icloud_activation_lock_for_free_2019.pdf
    • https://uploads.strikinglycdn.com/files/4833a2a6-8f8f-4bea-9566-2f6098ee3186/dapple_grey_horse_for_sale_ontario.pdf
    • https://uploads.strikinglycdn.com/files/8390185c-2917-4a0a-a775-3c79e6e0d6f1/maiden_voyage_sea_of_thieves_guide.pdf
    • https://s3.amazonaws.com/kofabube/41231406942.pdf
    • http://wozitoso.atwebpages.com/vuvuveju.pdf
    • https://uploads.strikinglycdn.com/files/f8e85509-c3a3-4405-a3ab-29f2230f67bc/myers_briggs_personality_test_free_download.pdf
    • https://s3.amazonaws.com/wujixus/90334370727.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_off00010250.bin
89af20eda03b0ae3469967eec60478de8b706b006b3b39dc9fff47f5860d0697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 5224 bytes
font_01_sfnt_off0001141c.bin
81f98cf555eda1191c8ea49e3a3d6a0d0cf5fe1c495db5c35a13dc7f7ba685e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1141C 11572 bytes

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