PDF malware analysis — malicious · 0b1c526832fb86ee

MALICIOUS

PDF

90.4 KB Created: 2021-07-18 17:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 0accbd6eaffce9f950481323893c3f54 SHA-1: f36ac948e6a0f89662e16b4bf19b5f4e2e4d0d4c SHA-256: 0b1c526832fb86eeb4c0a0bb30aa9f9faa1f00cfc290a49f45daffb1925f540a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a large number of external URIs, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The primary purpose appears to be directing users to malicious content hosted on these compromised sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9765

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://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4103c0e973---10042982261.pdf In PDF document text
- http://devison-matras.com/upload/file/norofu.pdfIn PDF document text
- http://jshtextile.com/UserFiles/file///6634273150.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7faeb98b9---69865700496.pdfIn PDF document text
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/40e172ff9cb27cb949e4cbbbfaccc258/53430922488.pdfIn PDF document text
- https://maintogelonline.info/contents//files/guxiduvedusab.pdfIn PDF document text
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7849a3b895---paposepavuwalaseneka.pdfIn PDF document text
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/b6382ff2a03450f81ea0383ccc3af1e2/feketulawazizemelapep.pdfIn PDF document text
- https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/73360765355.pdfIn PDF document text
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/16942341209.pdfIn PDF document text
- http://paulsaperstein.com/userfiles/files/goguwowoxotijanigolu.pdfIn PDF document text
- https://telewebmarketing.com/FCKeditor/file/ragiwegad.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/3d84079d68cd8f309b55b8dac5c991cd/20992776609.pdfIn PDF document text
- https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/83082977175.pdfIn PDF document text
- http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gofuk.pdfIn PDF document text
- http://autoscuolecasetta.it/userfiles/files/gajevi.pdfIn PDF document text
- https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/30e2a6c337d6e8d726b2e3b1a3806973/44214580573.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/02e4deb89bd9ef926b04f7812d7fbe60/28977085838.pdfIn PDF document text
- http://nebovsem.ru/app/webroot/files/files/fejisebilajefufewakojarag.pdfIn PDF document text
- http://tpdw.pl/userfiles/file/86285650742.pdfIn PDF document text
- http://toanlinh.vn/upload/files/29107329066.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/1nkf62b9pvf0lle831td4qmik0/31634419562.pdfIn PDF document text
- https://grandplaza.bg/uploads/assets/file/negevales.pdfIn PDF document text
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075cc9040d2d---pudilotoxofikigux.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/9d85be16dd3a1f88df15d2d4cf2cf0e5/37154532638.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/a541bf39abe1a93f303efec6535d1784/42752048744.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=what+is+the+past+tense+for+doPDF 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_off0000f511.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF511	1700 bytes
SHA-256: `576f4d7cc77975728baeb1f39db534b98eb0f89ff97bfc59a5493b6701406baa`
`font_01_sfnt_off0000fd27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD27	10540 bytes
SHA-256: `af23d0d1bdfd7afeca94d146b1eb04c86025fdea10115f965703c9e6b9cce5c0`
`font_02_sfnt_off00011524.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11524	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00012d36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D36	18016 bytes
SHA-256: `0b9a00bf70314d616535407c790eb29cf6fdf4f659b087f1f0a2656dff4b201b`

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