PDF malware analysis — malicious · eceeacdf0ccd2db5

MALICIOUS

PDF

89.8 KB Created: 2021-06-25 20:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 427434932d7ff6fe46ebcfb6adc95234 SHA-1: aedf51122c23a0378cf16a935d3c907e10a373c9 SHA-256: eceeacdf0ccd2db595a81cf87356f8bb6f309ae45db45dfb44ed6c036ee36b4c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which point to compromised CMS upload directories. The ML classifier also flagged this PDF as malicious with high confidence. The primary function appears to be acting as a link farm, potentially to distribute further malicious content or for SEO manipulation.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

Heuristics 5

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://burgaseguros.com/userfiles/file/13053858022.pdf In PDF document text
- http://notariocprietoa.com/notaria/documentos/files/dexotelu.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/8632418836.pdfIn PDF document text
- http://highendschmiede.de/highendfiles/file/35485378853.pdfIn PDF document text
- http://itkaufmann.com/images/fckimages/file/sofek.pdfIn PDF document text
- https://tractorpulling-emmeloord.nl/upload/file/fixuzifaruwibosulifade.pdfIn PDF document text
- https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/28750a04af6cfebb4efdf8ee6a2e60f4/xitowuvopoza.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b042d673348---37932646869.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d90365b62---70133520718.pdfIn PDF document text
- https://alice-immo.com/userfiles/file/sujivuxud.pdfIn PDF document text
- https://dagvandearchitectuur.be/_files/file/kinemuroxevovuwoxumozutaf.pdfIn PDF document text
- https://allmassage.net/upload/file/20210526160713.pdfIn PDF document text
- http://techsystem.gr/data/uploads/ckeditor/files/47690940745.pdfIn PDF document text
- http://sakaryakasaplarodasi.org/userfiles/file/59628745826.pdfIn PDF document text
- http://tyextractor.com/d/files/kukikinek.pdfIn PDF document text
- https://baongochoa.com/upload/file/sibuluviba.pdfIn PDF document text
- http://se-ty.ru/uploads/userfiles/file/1380118438.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765bb53ba68---vamajepenizozegubapug.pdfIn PDF document text
- http://eurekaelearning.com/upload/news/file/33089460686.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/3a967e234e14dfbef1aaa55277c7f8b0/kexedemixewexopam.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/e9a512a222672768ff60378f46021aa7/18136732609.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/3bf9ff30c789fbca8e309c7d37d21932/mamipujagunos.pdfIn PDF document text
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/807d8cef92072c918682576be9fa70f2/41987947866.pdfIn PDF document text
- https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/e4882e55424a97e3834a46feda97e330/sukurumewabofigovamimezi.pdfIn PDF document text
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/7cd95b5cf747440d4bfccb54ca9c59e4/dejozuluraguzaxeguja.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=180+rmb+to+usdPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cea6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEA6	10396 bytes
SHA-256: `d37ddc18762ce21e0999de23aeb2c779431c96104cef688a7aa8a92030b1ef46`
`font_01_sfnt_off0000e62e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE62E	16260 bytes
SHA-256: `a332b091fcba4bd9784a503eff39cef778ee4931e35ffe5922a6553eb7df0156`
`font_02_sfnt_off000116a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116A3	16348 bytes
SHA-256: `7c836c81c66edd30b2d8b9f050c185ad7d7ef19de348650e14146f95ca9594a3`
`font_03_sfnt_off00014164.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14164	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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