Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f837ab35638785…

MALICIOUS

PDF

55.4 KB Created: 2021-07-08 22:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4e492d9f1892fdadd8c6038474a7758e SHA-1: 8dcf60a30dc4c02571def06f95b9ab9439deda57 SHA-256: 56f837ab35638785a7c3a0f1321391ed6cf0b81fa2349722d89e95154f264bc0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier further support its malicious nature. The presence of multiple links to compromised CMS uploads suggests an attempt to distribute malware or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5222

Heuristics 5

  • 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
  • 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://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608cdfee7acc0---68014441804.pdf In PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/df5a989b6feb3889f1b3e321a174971d/50668082457.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/rnlde7sum9sjmfjdio1p93tonu/98217360849.pdfIn PDF document text
    • http://boeschfamilytravels.com/clients/43210/File/54873449457.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/88c2e1a3773eb7b8eafefffa5c1962e0/zubagogupedugazebexe.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/ffe8bc13768aac0c1732bb0fb2181ab4/22120614540.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942e945fdea---kasiwezuxazaworalebiw.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/c6aeeecca32c74b1f6d0fd1a58aa65f2/93427461218.pdfIn PDF document text
    • http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75604083877.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/edc3e0137c923fca6b8dbd9b90dd2f2f/85907717090.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/796dqc0d6nrcut65hu2unvk72f/vunamorisi.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b402ced2aae---tasin.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/mekeojf87vmrfkcj79n9n07jg5/76357633444.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/29074132196.pdfIn PDF document text
    • http://newtrierreunion1962.com/clients/6/64/64567561842b0bbd40b956adda0282a7/File/65726634875.pdfIn PDF document text
    • http://accronline.com/userfiles/file/sepivuk.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/mojabu.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b776cbf05db---70934845471.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160af85d68e82e---65883452945.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa9af6ec98---zawipemosumomumomixut.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf549f422b3---9716051311.pdfIn PDF document text
    • https://bevelec.com/bevelec/dossierMois/file/46490382748.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/6582378b4a546bfd71dbdf7a9ed0402f/dusaparomo.pdfIn PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/a427692b163a5694f25a2c59ebad6156/zelujivizibu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=how+long+does+cash+app+direct+deposit+takePDF link annotation

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