Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd2065732ae8576…

MALICIOUS

PDF

78.9 KB Created: 2021-09-09 13:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: af10344ba473854694cbd76770168e08 SHA-1: 4e264bbf45b0160da91d6695d609a1baae917269 SHA-256: ebd2065732ae8576ecababf179015c72d4f3951d17a47256082f59e3ec0a5fa8
146 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://coretry.ru/uplcv?utm_term=wwe+locker+codes+2k19 PDF link annotation
    • http://feynburg-uhren.de/uploads/molejotulemomigireji.pdfIn PDF document text
    • http://estatepie.com/files/userfiles/file/2433056280.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/78471416223.pdfIn PDF document text
    • http://chronocertif.com/userfiles/file/natijokifibojejegejujila.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/50010681354.pdfIn PDF document text
    • http://wxeina.com/userfiles/files/sewoxipu.pdfIn PDF document text
    • http://pkpneu.cz/userfiles/file/femefe.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/jepowenaveverelixaruve.pdfIn PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/51513144490.pdfIn PDF document text
    • http://lollanaclinic.com/image/upload/File/63370346380.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/94672045181.pdfIn PDF document text
    • https://www.ewdel.cz/ckfinder/userfiles/files/48075350557.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133448fa9595---68058133174.pdfIn PDF document text
    • http://fs-select.com/images/blog/file/pibovuzosilamowatijopir.pdfIn PDF document text
    • https://chongtham68.com/app/webroot/uploads/files/49717236097.pdfIn PDF document text
    • http://www.somdattabasu.com/fckimages/file/bejubujavolu.pdfIn PDF document text
    • https://immo-macedo.lu/userfiles/files/3302899578.pdfIn PDF document text
    • https://congchunghadong.com/uploads/files/rebinedapalavuwediw.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/fd108de4263db824005e1d127a6d5873/lexupaperakosiwidi.pdfIn PDF document text
    • http://coolbiotech.com/upload/files/viwawisodutegokeninezado.pdfIn PDF document text
    • https://fundacjanadzieja.com/images/wyswig_images/file/rezudireno.pdfIn PDF document text
    • https://www.eos.org.eg/ckfinder/userfiles/files/27250589555.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/279684854613783db11bd3.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 10416 bytes
SHA-256: 25346b531c95124d89c640e729810f6a3247ac0ee85115c04a758a817953cd3e
font_01_sfnt_off0000e423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE423 18972 bytes
SHA-256: 59c6a6912d35e693c37a5ea7e6ea79d91237f504e0628df3ef63fc06eb8610ed
font_02_sfnt_off000115fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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