Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e66deeba8ef332…

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 21:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00a3e208d05c4e561fa54cb85a8e1fd4 SHA-1: a6ae0b26cea74b4445082d13759294f4c8f89f2e SHA-256: 23e66deeba8ef332c04ba90dbce0697ba678c953a76f87abf5640d5fa80bc9a4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though partially corrupted, contains text related to a checklist and application metadata, suggesting a lure. The embedded URLs point to suspicious domains, likely serving as part of a phishing or malware distribution scheme.

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://botokaw.ru/strik?utm_term=things+to+buy+for+new+home+checklist
    • http://ideaita.fun/alt_j_relaxer_zip9v57d.pdf
    • http://ladiluvame.mypressonline.com/pit_bike_et_dirt_bike_difference.pdf
    • https://cdn.sqhk.co/gejupajo/ieCIigf/22040571628.pdf
    • http://memijijarem.22web.org/automatic_call_recording_software_for_android_mobile.pdf
    • http://likedizar.medianewsonline.com/lunebux.pdf
    • http://letilemugemin.66ghz.com/84886323950.pdf
    • https://cdn.sqhk.co/madumubo/PifThig/vomelakimufotezanori.pdf
    • http://helplnstagramcontact6088757.com/nc_drivers_licence_renewal_appointment20c1k.pdf
    • http://blognews.top/how_much_is_rafael_nadal_academy9x5ue.pdf
    • https://cdn.sqhk.co/nugopanage/zN2ghTY/joe_teti_dual_survival_bio.pdf
    • https://cdn.sqhk.co/jupozaregu/ciihbic/tower_defence_king_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jazofi/51464721102.pdf
    • https://s3.amazonaws.com/satudifin/94776758339.pdf
    • https://s3.amazonaws.com/gosete/customs_declaration_form_us_to_canada.pdf
    • https://s3.amazonaws.com/suxuzubojut/66940043514.pdf
    • https://s3.amazonaws.com/jafujasiwetid/tirepomuzova.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_off0000ee11.bin
dd8ffcda756feb4e9e7e912490c1757327a9586ba584af4e7d5e17ff63abc959		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE11 5432 bytes
font_01_sfnt_off0001008a.bin
e210125af05e3ee516bac634be4b84dad6f8d558418063acc09afc4a1af85178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1008A 10304 bytes

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