MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs pointing to compromised WordPress sites, indicating a tactic to distribute traffic or host malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external URIs supports a malicious intent. No scripts were extracted, limiting the analysis of direct execution vectors.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160f2030256ba3---26520110673.pdf In PDF document text
- http://sunarfactory.com/userfiles/files/11374918503.pdfIn PDF document text
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8baba37a1---39101253552.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d805107499c---82564755781.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c147ee38db7---97566741079.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608073115c4b5---16436322940.pdfIn PDF document text
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/m66n166enjbf4laukj11e8png7/31382804859.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16074f735f37ff---kumeravupor.pdfIn PDF document text
- http://anshan56.cn/userfiles/file/16260995471839942587.pdfIn PDF document text
- http://mamtomchabahai.com/uploads/files/files/vakil.pdfIn PDF document text
- http://eibich.de/layout/bilder/file/38423233076.pdfIn PDF document text
- http://backkwang.com/userData/board/file/58241859507.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e042dc3ada6---dojumisomasubaxugev.pdfIn PDF document text
- http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160c95cd45e29e---81166237233.pdfIn PDF document text
- http://prof-cosmetics.com/upload/files/15010815382.pdfIn PDF document text
- https://traicaygiasi.com/Images_upload/files/69202307086.pdfIn PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a92c35e903b---7689372858.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/41d54b7f5247ebd7b37d4804d3e5c631/govoruputixipabe.pdfIn PDF document text
- http://ha-sine.com/d/files/9567092786.pdfIn PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/e42a701aff4cc0bbfee16f15937a22ba/71039091942.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faa0d1a0f0f---xebeki.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/19f32e32ac9da5ae7633a0b03bf11c6a/7105731930.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8cb0c08e3---xozipoj.pdfIn PDF document text
- http://kovacsoltvaskerites.hu/images/file/22924333595.pdfIn PDF document text
- https://www.retake.dk/ckfinder/userfiles/files/pokenozorulakopeta.pdfIn PDF document text
- https://tonymusic.se/UserFiles/files/xaxelagujunoxiwet.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a87cab92355---14606502212.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=hammer+of+thor+pdfPDF 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e3e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3E6 | 16992 bytes |
SHA-256: add43b9a9f4e2a8ff3bb37d1a3859e33433614c55ad01a3a3f304161641dfafc |
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font_01_sfnt_off00011029.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11029 | 10344 bytes |
SHA-256: 14209b810b89aac8b3be29dcfa85c810511c66d3d6e567c3a7e8ee3f202ed964 |
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font_02_sfnt_off0001276e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1276E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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