Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a95b30eebd9f26…

MALICIOUS

PDF

99.8 KB Created: 2021-03-18 04:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cb53d0ef53209d8dc3f63ced405379e SHA-1: dcaf97b67212381fe80041f3571aa02f1dfc37bb SHA-256: 00a95b30eebd9f265d4413f59c732e98db50e9ef11ff79e65174436722ca97c3
136 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to lure the user into clicking it. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is a scam, likely to trick the user into believing they will receive a prize or benefit, which is a common phishing tactic. The ML classifier and ClamAV detection further confirm its malicious nature. The primary IOC is the external URI pointing to a suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://mezovuduw.ru/wix?keyword=moral+choices+an+introduction+to+ethics+pdf
    • http://sutiboju.sportsontheweb.net/attestation_employeur_pole_emploi_cesu.pdf
    • https://cdn-cms.f-static.net/uploads/4421611/normal_605158056d96a.pdf
    • http://wunuxuvi.sportsontheweb.net/rexonugavenegiteb.pdf
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fff444007dcb.pdf
    • https://static.s123-cdn-static.com/uploads/4368477/normal_6008f8d67ca19.pdf
    • https://cdn-cms.f-static.net/uploads/4415525/normal_60395dba9605f.pdf
    • https://cdn.sqhk.co/pometobab/cigmha1/86263197684.pdf
    • https://cdn.sqhk.co/kesavaki/cklheij/when_will_texas_campgrounds_open_again.pdf
    • http://rowowevu.mypressonline.com/c_oops_advanced_interview_questions.pdf
    • http://mekomob.getenjoyment.net/all_about_interior_design.pdf
    • https://cdn.sqhk.co/dutudovajud/jahgaie/talking_tom_cat_free_download_offline.pdf
    • https://cdn-cms.f-static.net/uploads/4367312/normal_601f400229f28.pdf
    • https://cdn-cms.f-static.net/uploads/4384825/normal_60444bb11136e.pdf
    • http://ritixibetono.mygamesonline.org/74844060867.pdf
    • http://bekopomulasebi.getenjoyment.net/81529005934.pdf
    • http://vatidenow.medianewsonline.com/cuanto_tiempo_puedo_tener_el_carnet_de_conducir_caducado.pdf
    • https://cdn-cms.f-static.net/uploads/4449178/normal_6048347283767.pdf
    • https://cdn.sqhk.co/wujukipako/TRQhcji/white_tripod_floor_lamp_ikea.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xolavozezimodan.onlinewebshop.net/10577667489.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_off000149f5.bin
222b24476356353b695d9752373b1cf49605d1df2ec2ab772c628ac5132961c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149F5 5248 bytes
font_01_sfnt_off00015bd0.bin
d0e5d0f856e8a176c05903e57f5b7cc064a72aa3df4c38dc9da7cf13057db7a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BD0 10932 bytes

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