Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ae633906b7bded…

MALICIOUS

PDF

85.7 KB Created: 2021-09-12 15:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ce93cde77321b47cdbc341785f2da5d2 SHA-1: 72f155ebd61d9fdf2255582a5be35ff2b16dd7ec SHA-256: e5ae633906b7bded7b6c7af26104007a50ed382f4511739a1100de31f0906bab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external domains, many of which are structured as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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://smidgel.ru/uplcv?utm_term=descargar+e+sword+en+espa%C3%B1ol+completo+gratis+para+android PDF link annotation
    • http://lovesushiscv.com/uploads/files/mazezikasatovo.pdfIn PDF document text
    • http://rklatex.com/userfiles/file/89296828950.pdfIn PDF document text
    • http://kolbiko.com/images/uploads/file/92597900441.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/17486284512.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/widowupoxilu.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/24505585243.pdfIn PDF document text
    • http://www.saletime.gr/admin/fckfiles/file/sagivo.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/55689513669.pdfIn PDF document text
    • https://floridagreatescape.com/media/file/25796471786.pdfIn PDF document text
    • http://fosterfreezesantarosa.com/uploads/files/pipaxarozuloroze.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/kojewopufizawos.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/rovapagulin.pdfIn PDF document text
    • http://calisnt.com/uploads/files/71965488430.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/8896334159.pdfIn PDF document text
    • https://hotelharmika.com/assets/userfiles/files/lowima.pdfIn PDF document text
    • http://votava2.altrodesign.eu/ckfinder/userfiles/files/22747766660.pdfIn PDF document text
    • http://biblioteka-belzec.pl/upload/files/ledidisorasepaxigegiv.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161393e3f274e9---wewuxojujadokiluruk.pdfIn PDF document text
    • http://fantacyhandicraft.com/userfiles/file/59245833442.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/4747211712.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/27350504905.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/mirujizeguzokozokeba.pdfIn PDF document text
    • http://obkladacstvikolar.com/content/wexurasirajog.pdfIn PDF document text
    • https://losaltos.com/wysiwygfiles/file/93496774466.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FC 19864 bytes
SHA-256: 3d0bcd050e4e7e8ba2282a48ffc6170f4fb1f5dd3fd5f4ca153a8c45ccc48d57
font_01_sfnt_off000113e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E5 11148 bytes
SHA-256: 54a44a3dad123ad73aa1902cc26126a6975710980ae0231b350f7dfb66334c15
font_02_sfnt_off00012d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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