Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b7dd149a75cb47…

MALICIOUS

PDF

91.7 KB Created: 2021-09-01 00:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1432b0e729d041666766004fa183a2de SHA-1: 086f2421b981568131ab9de45865ac12a22c103b SHA-256: 29b7dd149a75cb4768464baba40c12a7f1ced2f0952886104de900a01ac7ef72
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to external resources, with several hosted on compromised WordPress upload storage. The file's structure and the presence of many external links suggest it is designed to lead users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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://an-professional.ru/img/files/file/liminosedixudoz.pdf In PDF document text
    • https://interativacorretora.com/fotosempresa/files/53789958983.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/58378024148.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/mekovibil.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160754c21c4e5f---mefidisozowezomadumevav.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/280d43fe92c5a1392d9013847e5383df/50517353038.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/fk388p1k69c4rbpe3jh0o8fti4/28133298835.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f8eba0644---zugibarobagigubadujiku.pdfIn PDF document text
    • https://profesa.net/userFilesfile/musuzewamazesulobarawom.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/6c7aaaacf0403ece841687e7ffe268be/70428417928.pdfIn PDF document text
    • http://musicincw.com/fckeditor/userfiles/image/dufidusur.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/safidaz.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b98c4d39c8b---35771545470.pdfIn PDF document text
    • http://airsoft1.ro/files/file/raxudameg.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/lopolagozutobudugu.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609999092dec0---73193323633.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/54281479690.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c120925e1e9---pesoxa.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078fc259090f---velives.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083afe7463f1---vuxonegurul.pdfIn PDF document text
    • http://newgrids.com/userfiles/file/76509938774.pdfIn PDF document text
    • https://moyaexpresss.com/ckfinder/userfiles/files/podetuduxuduruxegasubizuv.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f393b38d8c---fewemudekaz.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/vosiwixupi.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a757bcc1c23---pamovin.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/ganude.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=high+school+of+succubus+guidePDF 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_off00010325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10325 17404 bytes
SHA-256: e499c33e0fc73c574a781efd47a07a586bdbc8244844051bf9042e3b943902cb
font_01_sfnt_off00012ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFE 10520 bytes
SHA-256: 46d0420b97a62755949ebd178a047b4b7ee45dbe58fe84ad4bbe88e4c490d135
font_02_sfnt_off000147c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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