Malicious PDF — malware analysis report

Static analysis result for SHA-256 830b003107268e50…

MALICIOUS

PDF

78.8 KB Created: 2020-12-23 05:08:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9cb704660b7e4e947dabdb55412685dd SHA-1: 1f937dd7cdf41a8b06818967364f4b6a18c02f21 SHA-256: 830b003107268e503658fff4fa26dbdc8f793fe4ac0c741fa497688b6da1771d
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=tumblr+wallpaper+light+blue PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415974/normal_5fe07d6999c41.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/33e64da6-29bf-4ff6-91a5-b09738f30fee/pathfinder_holy_water_cost.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ec66e5c7695ca9b54de7/t/5fc622215147b14804040576/1606820385723/gefezeribidukapifoba.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/animated_movies_free_websites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d32f64-9eb7-46cd-b530-db01e4130b0b/guess_the_movie_game_answers_level_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe1ac024477465040d06613/t/5fe1e6fb412b5b6b384fefbc/1608640252138/d_d_5e_premade_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/12812443988.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/hudson_river_plane_crash_news_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdf33376394b41d6426de8e/t/5fdf746a15a11837d0ba2d1e/1608479851317/infrastructure_report_card_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce7a97e-31e0-4c31-a8c9-ec834bcde047/lyrics_of_fresh_prince_of_bel_air.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c842a8c-a5c0-4bd3-b86c-da9299cc912a/yandere_asmr_forest.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_off0000d5ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AB 5236 bytes
SHA-256: 8ef50f82d9f4d1e951da927a777506215e3641f832074628254d5e79c02a70e8
font_01_sfnt_off0000e75b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75B 11160 bytes
SHA-256: 56a4d35813b6d48c29cadf2260bfb88672b4c7a5951e4b07de093efe8434b566
font_02_sfnt_off00010d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9D 19580 bytes
SHA-256: b985207f8cbe7870234e146728101aaed5d527b75a4accfa6d6e7c2668288133

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