Malicious PDF — malware analysis report

Static analysis result for SHA-256 466df1d65b7d69a4…

MALICIOUS

PDF

80.5 KB Created: 2021-09-07 01:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 48df49ff2a61ba1750a1ead3917b3a41 SHA-1: c46e33007621bfe2d7b57db8b5b6d70043d3a0da SHA-256: 466df1d65b7d69a4a39bde86fe9567b084a2b7e014d166398f835b3f5155c4a7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://zemtechnika.lt/public/site/0files/20642861331.pdf In PDF document text
    • http://bigxra.com/uploadfile/file/2021070319342073499.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16114542020820---rikunaz.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/id559lo2vv7hk33cmfr10mg4al/99592945220.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/kuqg1lsfot2u42o1sedg1qhbl2/jasexuxonawazuwatobes.pdfIn PDF document text
    • http://caffepontoni.com/uploads/file/50441192686.pdfIn PDF document text
    • https://tadimtursu.com/image/files/bebemevi.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097175d44b49---80201981859.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2f76da212---71797706765.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/mj5q9fqsl6b2tup8702j6lke0m/befuzos.pdfIn PDF document text
    • https://loctra.net/userfiles/file/masemukijogexiganotigezuv.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/366f3f8dedea1a5c3948d9b4fb3f47ed/magawokan.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e300f24ef8d---mutumawagiguvutosuk.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/nabadalarevizenelido.pdfIn PDF document text
    • http://novo-foto.ru/ckfinder/userfiles/files/22498516221.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/korunulomiterovotoxa.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16083416445d0f---tinubezalikegidi.pdfIn PDF document text
    • http://concilianavarra.com/userfiles/files/50699008195.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1607e71a159a9b---dezorasiluvip.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/2953097424.pdfIn PDF document text
    • http://hieuchuan.com/upload/files/bigizofutalomuzobipiritif.pdfIn PDF document text
    • http://kgmda.com/upload/files/75080125918.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd981061dd---newemo.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec62ca7b8---xufasor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=human+rights+information+in+marathi+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_off0000ca06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA06 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21D 10856 bytes
SHA-256: 219af49f11d08860d469a9cd4110d7973a2f6809f1b75e456d2b9c04f0f21b0b
font_02_sfnt_off0000faa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA8 22140 bytes
SHA-256: bc2dea54581767ea390b53fdc49aaeb9954ef2c0ae31106f198d955dd3c43ebd

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