Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe22b69572b5d1f3…

MALICIOUS

PDF

82.2 KB Created: 2021-09-17 08:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f4cb329628eb47f7b10948d7d500008c SHA-1: 8ed5caa160435eacbbf6565ee165390fe2ee8bc7 SHA-256: fe22b69572b5d1f3f9b645875bdcaf1dc3d152edfa4acc3702b19ec374c5c271
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on multiple domains, some of which are identified as disposable or compromised. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://project-lovcen.me/userfiles/file/wubono.pdf In PDF document text
    • http://nsfeed.com/_UploadFile/Images/file/38793196882.pdfIn PDF document text
    • http://eva.am/files/eb093c8660ac035e.pdfIn PDF document text
    • http://rainhouse.kr/data/editor/file/10376188126143d0afb4b6f.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132af5726735---vavojopotirebesim.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/kfgnjmm34dl581428u5pdcjbq2/33441349365.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/gexuriborus.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/cd170f7e59fb3c459b646cece9c36224/45741379403.pdfIn PDF document text
    • http://f1-rennsimulatoren.de/userfiles/file/12263453182.pdfIn PDF document text
    • http://cadelupo.it/userfiles/files/88308379514.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/dusiferemijip.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/90b864f614b8ae4310016efe3bac52da/34586563124.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/40525715039.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/95956801625.pdfIn PDF document text
    • http://ccshecea.org/upload/files/lisatibep.pdfIn PDF document text
    • http://hzosm.com/images/upload/File/ruvowudew.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161432f459a506---65627883587.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f00d910443---susafivakopezefidodawi.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613cbe39b7d25---51672283715.pdfIn PDF document text
    • http://kbcsisa.com/upload/fckeditor/file/rebabezegoxubifasobulijed.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/be99a275b48638aa8fa78aa6826b99d6/14479724804.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=download+eshareserver+for+smart+tvPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/78966122745.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_off0000ddbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBC 17408 bytes
SHA-256: 99a8130299b87cd6f41c76eeb287bf32e31c827797138eb16d77566b9e12d8e9
font_01_sfnt_off00010aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA3 10680 bytes
SHA-256: 2735788c06e6ec2c6b71c9fac8b9a9caae24176a331d7273503ca5d7290c003e
font_02_sfnt_off00012308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12308 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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