Malicious PDF — malware analysis report

Static analysis result for SHA-256 279e112003bb06e0…

MALICIOUS

PDF

80.4 KB Created: 2021-09-05 21:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d711eb5eccfa26e7f87e567c80b0781b SHA-1: ad14180985515247c13364ddfd79edf0e8111196 SHA-256: 279e112003bb06e07c86120cd3af99c2e2690b5f17d00b17af8b84da4b0afb28
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to various domains, some of which are hosted on compromised WordPress sites, suggesting an attempt to lure users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pindimana.in/uploads/file/nawuwegavuxaso.pdf In PDF document text
    • https://festival-bg.com/media/ckuploads/files/bufowadibatusifu.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/qeorohfulbsot47ua6h8jimu72/radofoz.pdfIn PDF document text
    • http://lukasikgroup.pl/Image/files/15987878079.pdfIn PDF document text
    • http://viswinkelindex.nl/images/uploads/gowuko.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/b5581542c781078c929a7c811da4da73/nalidakotuvakimufulal.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bb50e0f8fd---kamanukigozipidubobeg.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/tomexowetedi.pdfIn PDF document text
    • http://interfacetravels.com/app/webroot/js/ckfinder/userfiles/files/kifotutudutomigegole.pdfIn PDF document text
    • https://hbfilm.ca/resimler/files/92737503320.pdfIn PDF document text
    • http://nrnchina.com/test/images/ckfinder/files/pimog.pdfIn PDF document text
    • https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/82095272096.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/53752348102.pdfIn PDF document text
    • http://www.moyekolodin.com/files/21753887509.pdfIn PDF document text
    • https://carlojans.com/cms/file/tanigodabela.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/juzotigekitufizugakok.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6c1191826---suwinoguzavibeviviw.pdfIn PDF document text
    • https://pollackmihalyiskola.hu/ckfinder/userfiles/files/daferoj.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d30d903a477---90838559398.pdfIn PDF document text
    • https://torbay.ru/images/uploads/file/99248651246.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160db6f7724bc6---wumifesumu.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a01bf9fcd5---varirinosebiwel.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/17905114610.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609637540163c---50193111731.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=cyberspace+notes+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 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_off0000d57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57C 10760 bytes
SHA-256: e0daa8ad8438c919e86f23c65495c2fb30b20caf7f6b6392d854059ba9b2f9d0
font_01_sfnt_off0000ee3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3B 17552 bytes
SHA-256: adaa9656b3276954cb54b1ecb3c246fe1cb9975d29b122098a9f08bb10f1a9ec
font_02_sfnt_off00011c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.