Malicious PDF — malware analysis report

Static analysis result for SHA-256 515ce73c53528222…

MALICIOUS

PDF

257.3 KB Created: 2022-01-30 16:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2023-12-06
MD5: 506440e8f7e7d15647e271a2167da1a9 SHA-1: e2b8eef2e8085348441b4383ee3be320710a066d SHA-256: 515ce73c535282222ae75e3ae427061cbc8542c686cdd391b490303dba4a0625
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7038

Heuristics 6

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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 http://greatwalledmond.com/ckfinder/userfiles/files/sitiranuwotosenodutoj.pdf In PDF document text
    • https://xn--80aujdnb8a.xn--p1ai/kcfinder/upload/files/48851462966.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/81018361011.pdfIn PDF document text
    • http://skorepka15.cz/UserFiles/file/vajusesojiwuvaxole.pdfIn PDF document text
    • http://kastely-vacduka.hu/fileok/file/guxixiviz.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/gimetekawetedilog.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618b9eb8aac47---bibekik.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/78160710209.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/75911117686.pdfIn PDF document text
    • http://karikatura-kovarik.cz/files/file/89191039871.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/vadipafuvoxujasifavadu.pdfIn PDF document text
    • http://mutamobilya.com/images_upload/files/fedagivatekaluk.pdfIn PDF document text
    • http://solarexperte.ch/fckeditor/editor/images/file/tigukogamugig.pdfIn PDF document text
    • http://sevinctekstil.com/resimler/files/tosumalokap.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/tefevekiwakadox.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a534506e83b---zomefuduxitetoxa.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/d591c93e4bf6ea5a9c212e8856eb046d/sulezegenosefu.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/zikepidimutokaze.pdfIn PDF document text
    • http://andreuma.madteam.net/ckfinder/userfiles/files/27986521798.pdfIn PDF document text
    • http://molenat-energies.fr/molenat.com/images/editor/file/81259685554.pdfIn PDF document text
    • http://delta-serwis.pl/pliki/titesufoxelolozos.pdfIn PDF document text
    • http://aimecostruzioni.it/userfiles/files/dupudogej.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/gomupewekuvaku.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/kewanulo.pdfIn PDF document text
    • http://bajkolandia-leszno.pl/userfiles/file/lanawimene.pdfIn PDF document text
    • http://twojeloty.pl/admin/kcfinder/upload/files/27696695620.pdfIn PDF document text
    • https://www.thaiahpa.com/flash/files/jokalajezotozuguti.pdfIn PDF document text
    • http://trieuduong.com/images/Download/59486863638.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/68314552946.pdfIn PDF document text
    • https://skywaytravelandholidays.com/ckfinder/userfiles/files/rulojivipadowur.pdfIn PDF document text
    • http://stomerijindex.nl/images/uploads/70200731713.pdfIn PDF document text
    • http://slhospital.com/upload/fckeditor/file/38385046883.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=interior+angle+theorem+worksheet+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000397c1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000397c1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000397c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x397C1 11076 bytes
SHA-256: e9d6ed359ca24e3a56c163047b3edba333b8cc76215da7bd00ef1a7de8dc575d
font_01_sfnt_off0003b133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B133 17360 bytes
SHA-256: cda619bc5f12c35b5cce11865d4d3a34e83e61dc68a68c9f4bde4fe1f6425615
font_02_sfnt_off0003ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DED9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336