Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a34d266c00ba8f8…

MALICIOUS

PDF

73.5 KB Created: 2020-12-09 12:04:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: edca569c95d86d72ab07eefda60a28bd SHA-1: 982230d951c2a8049c173787c9d9eb60abf1e5de SHA-256: 9a34d266c00ba8f865119db9825498fb53b1ee58c007dcbdc33db01f04ea186f
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 0.9998

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://trafficel.ru/123?utm_term=hp+5520+printer+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478667/normal_5fafa15c11543.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490375/normal_5fcbf0e52cb30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/54aae537-9971-476c-88ec-29c2da9f41df/xotegivonanape.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/florida_dcf_work_calendar_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/gajusudineset.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffc42bda9c57a97b92422/t/5fc32fb03485235c862edbfa/1606627250106/james_madison_middle_school_appleton_wi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdcdccf1-1fb6-4782-935f-2ac0762fa526/tutu_helper_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/4th_goal_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/auto_clicker_app_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/best_accountant_cv_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c210a524-c67f-4f60-ba5b-0f2db13364c0/ropamenuvuk.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/que_paso_ayer_2_pelicula_completa.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/speaking_activities_for_beginner_esl_students.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/tasewejolawikuroda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f26ef2c-8bd0-4ec8-9f1d-7eec652fde34/mewedolagaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/sharp_aquos_42_smart_tv_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB97 4868 bytes
SHA-256: 3f65dc7b5e1ed5f912aeac92886ca52be6d7849fbc768d632bd7c73d3c7cfa57
font_01_sfnt_off0000dc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 11156 bytes
SHA-256: eeec2f15267c10285280d2cddb8b64a646a2f0a96e74f8f5453aa7e5a8581f3c
font_02_sfnt_off000101e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E0 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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