MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external links, many of which point to compromised WordPress sites. These links appear to form a link farm, a common tactic to obscure the final malicious destination or to distribute malware. The ML classifier strongly indicated maliciousness, supporting the interpretation of these links as part of a malicious campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614138098f257---potikatowutatizi.pdf
- https://tradingphrases.com/userfiles/files/xiranotojuzab.pdf
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/161581d3e1fd0b---56588192013.pdf
- http://cy2hand.com/userfiles/88136598955.pdf
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161533b6c5d328---16471171584.pdf
- http://lasantitosrestaurant.com/userfiles/file/85427877262.pdf
- http://classiccar-jp.com/js/upload/files/63438940335.pdf
- http://przedszkolenisko.pl/userfiles/file/tesidalesot.pdf
- http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75325017468.pdf
- http://jgbt.us/pds/userfiles/files/lonidepefe.pdf
- http://immobilieninvestors.de/userfiles/file/lodakifumebe.pdf
- https://www.aicsmindia.org/ckfinder/userfiles/files/jakaguvomijuvinakivu.pdf
- http://zhongjiukeji.com/upload_fck/file/2021-10-10/20211010103204204308.pdf
- http://taiwan-tsai.com/upload/files/70648266282.pdf
- http://clarksville.net/wysiwygfiles/file/marorululif.pdf
- https://letstravelforacause.com/miet/assets/files/78575745254.pdf
- http://feach.ie/images/uploads/file/zofalewikerutugojox.pdf
- https://kimtuong.vn/isc/public/files/fckupload/file/30399731899.pdf
- https://emenu.hu/editor_up/21527624790.pdf
- http://rensind.com/upfolder/e/files/20210924175358.pdf
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/3kr44queof379hpm09m7mn38fv/rezaba.pdf
- https://guadix.co/ckfinder/userfiles/files/vuliwukujifek.pdf
- https://skatrip.com/basefile/skatripcom/files/gobivupoxukekitibelixim.pdf
- https://hoya.hr/UserFiles/file/31756202817.pdf
- http://www.huescalamagiaenfotos.com/userfiles/files/17162508532.pdf
- http://freeware-software-download.de/uploads/editor/file/kebipuwopodokukujigisof.pdf
- http://greenbiotech.vn/uploads/userfiles/file/sebuseguriva.pdf
- https://feedproxy.google.com/~r/Gsjc/~3/xPAns0MRe5M/uplcv?utm_term=principle+of+mathematical+induction+examples
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000caf2.bina9ab9676243a0459d5077f01022e690cbbab427c89c07c7438972ca4e36809f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAF2 | 11088 bytes |
font_01_sfnt_off0000e49a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE49A | 16792 bytes |
font_02_sfnt_off0000fcac.bin6f50dd2d2daebd1e0c5026940292c376b82324adca6a3b88f96cd9989799780c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCAC | 19224 bytes |
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