Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09d499056b5bbec…

MALICIOUS

PDF

68.9 KB Created: 2021-09-25 13:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f733ce12d8329b793d34f93fe717fe85 SHA-1: 184f3360c86c0e84209ab910dd917167e1d85f4b SHA-256: e09d499056b5bbecd6303ee527f53af7b300370c1b4f156b1aa8b27b5370bb53
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that form a link farm, pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URI heuristics and link farm indicators strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://catamma.ru/uplcv?utm_term=marine+tracker+android PDF link annotation
    • http://asid.rw/userfiles/file/16008811502.pdfIn PDF document text
    • http://brette-animation.com/userfiles/file/rivapopulobutajodojog.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/f219fd106ae907f706043146a7553fb9/27326604404.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613042747623d---35578494840.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d1b81342a4---72917603382.pdfIn PDF document text
    • http://shanghaicruiseparty.com/uploads/file/gadalujijo.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613148d52a02f---99928752801.pdfIn PDF document text
    • http://tw-tms.com/uploadpic/xw/files/62803370227.pdfIn PDF document text
    • https://tenekedjieva.com/uploads/file/40070172533.pdfIn PDF document text
    • http://www.vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/73085191522.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16140d70df2a13---jesemenumudifobaxalu.pdfIn PDF document text
    • https://robindayne.com/ckfinder/userfiles/files/barutox.pdfIn PDF document text
    • http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wegejaxowegat.pdfIn PDF document text
    • https://nppgursaraijhansi.in/ckfinder/userfiles/files/xumipuwi.pdfIn PDF document text
    • https://epagneuls-bretons.fr/caningest/images/file/komulodadidulowepovep.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613da8fcc827e---78373557904.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/631a78c98f7d54168cb804fc8954ea6b/22440154441.pdfIn PDF document text
    • https://hotelgaric.com/upload/datoteke/lisakanitifozimidelux.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614aeae807a2f---39576729590.pdfIn PDF document text
    • http://macro-e.com/app/webroot/userfiles/files/tenumejatideva.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe4c36368f---zutafekonipagalafi.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/xipuxifurupakebanerogew.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b6e7c8023b---fowoberobudamuva.pdfIn PDF document text
    • http://ridendo.cz/files/file/80334200724.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_off0000b114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB114 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC92B 10232 bytes
SHA-256: 098a6a4c2fcf35f432894a42dcec82e1a90b24fcc33d5a30145fdce446cd6b54
font_02_sfnt_off0000e046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE046 15112 bytes
SHA-256: 5394ddfd6bbaa08adc297daabf90565002ea3ab79b00905d05a8ef096c0fdc55

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