Malicious PDF — malware analysis report

Static analysis result for SHA-256 459bff8dc2fa7e97…

MALICIOUS

PDF

71.6 KB Created: 2021-03-14 01:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 24098944ae6f9431b30b0c8d01cc80e8 SHA-1: 382d8ef9d6e0573574cef2125650d0d27c8c0cf1 SHA-256: 459bff8dc2fa7e97c3cd2994ea93b94cb9207f6492b39f523114d31b3cd92efe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=crystal+care+professional+sonic+toothbrush PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455642/normal_5ff9646d6ff23.pdfIn PDF document text
    • https://papukelub.weebly.com/uploads/1/3/4/6/134666119/xemelaxebosoginefu.pdfIn PDF document text
    • http://wawesoja.sportsontheweb.net/oracle_sql_and_pl_sql_performance_tuning.pdfIn PDF document text
    • https://lepopitiw.weebly.com/uploads/1/3/4/7/134762721/f243f871c841250.pdfIn PDF document text
    • http://ligumexijigab.getenjoyment.net/how_to_hard_reset_garmin_fenix_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_6015868b27ea9.pdfIn PDF document text
    • https://faxusonugavipil.weebly.com/uploads/1/3/4/7/134741565/db0efa9c28c9c08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459936/normal_604d2edf8204e.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/the_joy_of_less_by_pico_iyer_summary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371247/normal_60070f3ce3c2d.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/44137368901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420756/normal_6041ab15a41f2.pdfIn PDF document text
    • https://nofixemi.weebly.com/uploads/1/3/6/0/136082439/3a9ab3c3a48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xozeb/adventhealth_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/android_5._1_1_zip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4832d3b-9b40-4c5f-86d0-299b9beeff37/63539992322.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/android_app_to_create_animation_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/jamivijukokow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb48d961-08ba-485b-9d3f-c53aef3a01da/drawing_classes_for_adults_in_kolkata.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/confusing_gk_questions_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24376d6b-5b18-49e4-8c46-6a2d4bb1d8fd/how_to_set_military_time_on_armitron_pro_sport_watch.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6E 5248 bytes
SHA-256: 08da996b120b2f3baa968c8746272085ebe28ae4a565d3845f8156f15829e210
font_01_sfnt_off0000ec45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC45 10836 bytes
SHA-256: 2e89d28a3b6fc72a612ef8d10bf853ca3d2c124d9db8e8d429544fb627ccf1c2

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