Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b3a4068157ec40…

MALICIOUS

PDF

70.8 KB Created: 2021-03-02 17:26:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a30f103c2d5f68c3bc2e9bc2d9cadb87 SHA-1: 0fac26fed92008c7e40821253ad2956f8f5032f6 SHA-256: 65b3a4068157ec401f7fb8b66b60d94cc77dcf88cd16ba5f123245da21e889bd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/award?keyword=how+to+connect+a+wireless+n+repeater PDF link annotation
    • http://universe1.space/download_ebook_return_of_the_devil_kingwz1n3.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/gufewurugolanuledutedogi.pdfIn PDF document text
    • http://buvinivu.iblogger.org/23370527822.pdfIn PDF document text
    • http://golixudib.mypressonline.com/wufufulafojolixutafebi.pdfIn PDF document text
    • http://creditscorerepair.info/acordeon_de_papel_manualidadesj5ipq.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/resumen_acto_2_el_si_de_las_nias.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/xifemukivexenujufusasemoj.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/xolisojelagufalutuletitix.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/boxujetanonikuv/13464464144.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/animated_svg_icon.pdfIn PDF document text
    • http://famojubosaved.rf.gd/besinepiditojode.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/bufubotavonosopemot.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/67569559105.pdfIn PDF document text
    • http://wusekugu.rf.gd/9482303742.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/justification_report_unzip_password.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/ergomed_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/dj_remix_dance_music_apk.pdfIn PDF document text
    • http://tiwobera.rf.gd/adipose_tissue_lipid_form.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_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 4980 bytes
SHA-256: 47099a035ea7897ecd778c37f52ba50d83fdf9548f90f20e87a6bc6d7c6f0cb9
font_01_sfnt_off0000ea80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA80 10436 bytes
SHA-256: e80f1eafb77d8613093d54982b50888055b8c480e3f86abf1321be9eb828b8ce