Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac09b90844e9026a…

MALICIOUS

PDF

69.6 KB Created: 2021-02-17 23:14:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2291053d7432cd5f0f7e435b3e269ab0 SHA-1: 93b4097e6052475e38d6497b04355a4996c237a2 SHA-256: ac09b90844e9026a2d970cbddd635fa2d19b595335826f2401db8472984f8e8a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text that appears to be a lure related to "A love to last may 30th", suggesting a phishing or social engineering attempt.

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://jottigo.ru/wix?keyword=a+love+to+last+may+30th PDF link annotation
    • https://cdn.sqhk.co/wimiwupo/wSNFDjf/57652828760.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/icdGgib/wejudusidowibo.pdfIn PDF document text
    • http://socialwave.me/colossal_chest_minecraftj622f.pdfIn PDF document text
    • http://coolvdomaion.online/expenses_spreadsheet_free4gpw9.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/OBliegf/ding_ding_ding_good_morning_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/eidINig/mikecrack_vs_mikecrack._exe_cancion.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/4alI7iC/best_rock_songs_of_the_2000s_youtube.pdfIn PDF document text
    • http://serviceforyou.site/73208054538aym0e.pdfIn PDF document text
    • http://yandex-dostav.ru/project_status_update_meeting_templatex615a.pdfIn PDF document text
    • https://cdn.sqhk.co/suzironanes/ijhcyHN/gogetebekukog.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/eroiehg/19789126898.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/bQlNejh/trial_xtreme_bike_racing_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/1shihdp/31301634497.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/XjjrdeW/house_building_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/hfrhdt6/76095454170.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/jitimesolagun/handwriting_sheets_for_left_handers.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/44867046993.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/pefugok.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/adobe_support_s.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/free_printable_thought_bubble_template.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_off0000d43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43D 5284 bytes
SHA-256: acca89e622327c2b9fea52190f06a49a5aa27f5359cb2dac9101ba51e94be824
font_01_sfnt_off0000e619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE619 10360 bytes
SHA-256: 4e8abbd3662df56969b6fee58ba1da37fb1063ba20417c3822e6e9822d67812c

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