Malicious PDF — malware analysis report

Static analysis result for SHA-256 1375244801ea0e23…

MALICIOUS

PDF

80.8 KB Created: 2021-04-05 01:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 521f159db9d748dd2b657a4e20a58964 SHA-1: 2546eb5dcf8360032cd4e785c528158fc652e2c9 SHA-256: 1375244801ea0e23704472f4d08ecbfab2fd4d108595ed51875b87a43c1c4eef
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://maypoin.ru/123?utm_term=florida+gators+football+recruiting+bleacher+report', which is likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL strongly suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=florida+gators+football+recruiting+bleacher+report PDF link annotation
    • http://bobejitamatu.iblogger.org/52389839921.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/pubopelej/nameerror_name_sys_platform_is_not_defined_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8be44d-acb0-4c0c-8b56-7b6daf6c88ce/how_much_oil_does_a_craftsman_power_washer_take.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/different_moonkin_forms_bfa.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/985543617.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/venepujifarizajil.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/astor_piazzolla_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/vitamix_vm0101_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08249a22-ff58-42fb-aa27-5d9ebcdf298f/mozenajodafuvubavugujize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b6582f-1740-445a-820f-152e4d86a63d/wovuverezibeb.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/oracle_forms_java_11.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/car_racing_games_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/movie_mix_tv_guide_uk.pdfIn PDF document text
    • http://sijurajogo.epizy.com/rosaberiletisaterosi.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/kindergarten_worksheet_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8db81dea-0bb3-473a-b3a0-57af5b6fe848/99040302469.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/lameli.pdfIn PDF document text
    • http://vaforapibasaw.epizy.com/i_hereby_certify_that_the_above_information.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/bulk_all_instagram_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/44492956098.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_off0000ff1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1A 5512 bytes
SHA-256: 71cde9ba1c02a84bceb2f9565f9351d3ab600f41ef6423e6ee44c20cc6bc6f8c
font_01_sfnt_off000111cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CB 10544 bytes
SHA-256: 150716638ed9e3bf06f0d4ffbacb9929a05e64d1253ec0b309d87187f02206ad

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