Malicious PDF — malware analysis report

Static analysis result for SHA-256 3364349e2227708b…

MALICIOUS

PDF

83.1 KB Created: 2021-09-18 08:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0b816234a7942f943cc16c39704fcc6e SHA-1: e39582265d078d46032a5b616d29ff770f024116 SHA-256: 3364349e2227708bda3750817fca0a464ccac680da03a5b60af6206de29a5d14
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, forming a link farm. The presence of embedded JavaScript and ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://pistant.ru/uplcv?utm_term=sports+live+stream+websites+free PDF link annotation
    • http://szcftz.com/upload/mowomoserurivu.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5cc37f977---talexetilixe.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/52241432423.pdfIn PDF document text
    • http://pdww.ru/ckfinder/userfiles/files/92269495168.pdfIn PDF document text
    • http://daimarconstrucciones.com/images/admin/file/xosapegozoluradaduzatidev.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/demuxituzixubedometamijo.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/a6ccd1b5ee5a8d91a80c702ab81bcb97/84271638045.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/davepiliwukipusativigev.pdfIn PDF document text
    • http://villaroyalenews.com/userimages/bojuve.pdfIn PDF document text
    • http://flyingwedge.com/uploads/assets/file/vabuwulu.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/86161851910.pdfIn PDF document text
    • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/18642215764.pdfIn PDF document text
    • http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/zijuguvo.pdfIn PDF document text
    • https://tunguoilon.tunhua.vn/ipp/images/uploads/files/99010738987.pdfIn PDF document text
    • http://nagakuratrading.com/js/upload/files/26663453175.pdfIn PDF document text
    • http://terredellamagnagrecia.com/userfiles/files/buviteboto.pdfIn PDF document text
    • http://cuacuonanbinh.com/userfiles/file/4019731941.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/vujexodojudorusig.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/fanimifoxuxizuvaru.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140bac129b59---jipiserapugixusosadi.pdfIn PDF document text
    • http://xn--12cbg9dihj7egda2g6a7dceb1d2cp4nvgf4f.com/datas/files/tozebaluvabejazag.pdfIn PDF document text
    • http://saharun.org/uploads/ckfinder/userfiles/files/goxakidovenipat.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/37344550690.pdfIn PDF document text
    • http://sushistoryus.com/uploads/files/takofonigulukeker.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/4dba1c31d056da06dab4b981b021cb7e/nafadanulatedora.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_off0000dfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA6 10780 bytes
SHA-256: 8795c60c581d35b40e2c2ddd5cc35d8f44db25770b34df7382884be70efbe002
font_01_sfnt_off0000f854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF854 17888 bytes
SHA-256: ea6fb1b7b519a004c7dd201519186cc14664ad1fe6d16c758e30cef9077b3647
font_02_sfnt_off0001270d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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