Malicious PDF — malware analysis report

Static analysis result for SHA-256 09193e9ad703c018…

MALICIOUS

PDF

79.8 KB Created: 2021-06-28 20:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 49f12678dec0b25d33d90f013535bf0d SHA-1: 4d9f1a763dbfb077953ff54798e591f60aba38b5 SHA-256: 09193e9ad703c018638031e94c2d27a8f2cbf8ffea5f69b5369345fcccae0eb0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to phishing or malware distribution sites. The presence of external URIs and link farm heuristics strongly supports a phishing or credential harvesting attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • 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://synerhu.ru/uplcv?utm_term=reply+meaning+in+tamil PDF link annotation
    • https://premium-house.uz/images/file/faruxat.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d9a7de89337---lijenenisu.pdfIn PDF document text
    • http://kiuruvedenlukio.fi/tiedostot/file/98095866931.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607055761e0e5---77562743811.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b061b86977e---94383911376.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/59944250701.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/c0524e8d8f7558bd995fbb0b3f383fb5/14476964725.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/pufewewenanutupaseru.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/33d219e652171086833f69479ace0436/siwesilolob.pdfIn PDF document text
    • https://amd-export.com/site/upload/file/lavevim.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16095c8b1f203d---87324871996.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/masarumutuzen.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a543f40e4---76483254830.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/699d29bd338ac58894fb3152c9f2c9fc/81280529580.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/11064696488.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a117af69e97---zojud.pdfIn PDF document text
    • https://uleiuri.ro/userfiles/file/kulefutuwajukumosigu.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/13188366519.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/254c62f5089ae90beeafa70b3fc0a36b/99360025331.pdfIn PDF document text
    • http://travelshops.pl/userfiles/file/nelekubap.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/316928cfd4a4f5b0f0a616d3c1b1160c/67613764118.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086907cbe756---18276176922.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e50c34c670---39243511092.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_off0000d31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2E 18172 bytes
SHA-256: ab0930dd8bf47f6eefb115fcd976240d2093789bd2f54569b1f6ec73f69c925e
font_02_sfnt_off00011ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD1 10364 bytes
SHA-256: eecd60bf343b1f0288e7ddec1abcd830b02373dda109e60bd6553ee0d40f5b8c

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