Malicious PDF — malware analysis report

Static analysis result for SHA-256 525bf2b5956a5b2a…

MALICIOUS

PDF

86.9 KB Created: 2021-04-04 01:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bf03ca8c2adf5d571265a4b1d13e3f14 SHA-1: baabbcb63330dda3306871dfafd182bbe31f97c8 SHA-256: 525bf2b5956a5b2ac8d9cebc766dcdccf1c02383094902356726db404579a0ee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Castiel true form'. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://bologen.ru/123?utm_term=castiel+true+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375509/normal_604eebef3ea45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_6015301976f7f.pdfIn PDF document text
    • http://vifaborabab.22web.org/upsc_assistant_commandant_previous_year_papers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469143/normal_6054f39383c2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384050/normal_5fdd7f5b32945.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/nupotukig/bofamezugimisaga.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/fifty_shades_of_darker_full_movie_download_in_hindi_dubbed_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0b939a6-cf6d-4699-b8f9-e63e43ea1976/medx655dw1_not_heating.pdfIn PDF document text
    • http://texakotinize.rf.gd/android_emulator_app_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca514b7-79a6-4dfc-b7f9-5bf6a1779742/mopebesinewavixopebe.pdfIn PDF document text
    • http://konevimojo.epizy.com/8691078733.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/apostrophe_worksheets_3rd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb2170a-f223-496a-9757-a6c815dbaa75/rixoxitofinef.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/night_shift_jobs_work_from_home_in_delhi.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/make_your_home_among_strangers.pdfIn PDF document text
    • http://sugototuvomek.rf.gd/88758943182.pdfIn PDF document text
    • http://mijikabetabup.rf.gd/barron_s_ielts_practice_exams_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0cef00a-2c42-4bf5-aa61-0a8c582687d1/31137933845.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/juxitosejatu.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/lexus_es300h_2020_india.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/aew_grades_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/you_can_heal_your_life_book_free.pdfIn PDF document text
    • http://lifugefumiwikoz.epizy.com/chemistry_book_for_class_9_free.pdfIn PDF document text
    • http://nakuruxut.epizy.com/70348957280.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9D 13708 bytes
SHA-256: 88e912a53860ac938a58d81a6ac862802113c9e9391cf8afb6f32122b7891391
font_01_sfnt_off00011965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11965 4816 bytes
SHA-256: ef28b6445235345206cd5a694603cd0a5af995fa9e7ab8feb55e8cf34d46966f
font_02_sfnt_off000129a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A7 10808 bytes
SHA-256: 58d7813a15b6d29352451d476d3c8a7f1360cd0506d9dca5e42396a8a5e8914f

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