Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fcdfe540b9ba2b4…

MALICIOUS

PDF

71.2 KB Created: 2021-02-26 06:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6ead92716121613742610e15476aa388 SHA-1: 4aeb200b11fbe099c8611a0088ce0f62f7b00d5b SHA-256: 8fcdfe540b9ba2b47b54b356ed3d27cf817d03377c1ea98244f0924e4a5b50b1
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/award?keyword=how+do+i+turn+on+bluetooth+on+my+proform+treadmill PDF link annotation
    • http://thefortykuti.com/11148788507ssq1s.pdfIn PDF document text
    • http://javebamugizal.66ghz.com/88146856866.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409396/normal_5fe26889a4f9d.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/us_army_corps_of_engineers_jobs_in_georgia.pdfIn PDF document text
    • http://detonicufficiale.website/41467841418c3548.pdfIn PDF document text
    • http://fanutoragozogow.sportsontheweb.net/dungeons_and_dragons_books_barnes_and_noble.pdfIn PDF document text
    • http://poradoit2.site/sagigitatirawipewaffimzb.pdfIn PDF document text
    • http://lg-supportteam.com/the_hunger_games_catching_fire_book9zpd5.pdfIn PDF document text
    • http://lidozabanej.iblogger.org/ripagunovotejunotovuteni.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/internal_audit_jobs_in_south_africa.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/51134523086.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/niihiNM/draw_it_cute_fortnite_chapter_2.pdfIn PDF document text
    • http://meinekarten.best/purugesizaxiwik0rp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bivojeda.atwebpages.com/xbox_360_codigo_de_error_03-80-00.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/are_schweser_notes_enough_for_cfa.pdfIn PDF document text
    • http://moxododokojuke.epizy.com/rimosufiridagad.pdfIn PDF document text
    • http://nununad.myartsonline.com/army_regulation_600-20_army_command_policy.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/budujusebadotur.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_off0000d90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90E 5396 bytes
SHA-256: adbcab4bb1c37faa6ab4ec4e7c1394643c5eddde1cf8520277b7709f1e65e0de
font_01_sfnt_off0000eb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4A 10664 bytes
SHA-256: 714965249ad10e755bb0b4cd0825829d535159f7ef16673ff9cfee504c607d0a