MALICIOUS
112
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and links to external content hosted on compromised WordPress sites, suggesting an attempt to deliver a malicious payload. The presence of a visual download button further supports a lure-based attack pattern. The ML classifier strongly indicated maliciousness, and the overall structure points to a downloader or exploit delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://thedewakohchang.com/image/upload/File/4574100293.pdf
- http://kaizousha.com/js/upload/files/dekuja.pdf
- http://www.sana-anong.com/ckeditor/ckfinder/userfiles2/files/wepevone.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/161372e994a649---11806287631.pdf
- http://itfkarnataka.com/cvsprojects/SSK/Source/2.0.0/images/files/55932881229.pdf
- http://theloanwala.com/userfiles/file/webapujolaxemobakebut.pdf
- https://romalasergroup.com/userfiles/files/22722196430.pdf
- http://vet-arrighicolangelicristilli.eu/userfiles/files/tavowofad.pdf
- https://eastmanllc.net/ckfinder/userfiles/files/14330546895.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/d3701d2a29f512d35e03f51825724c72/gefusewuripepoz.pdf
- http://sgrappresentanze.eu/userfiles/files/mitaguzamomazij.pdf
- https://phongkhamtamthan.net/uploadeditor/files/92225241607.pdf
- https://www.agcontraincendios.es/ckfinder/userfiles/files/29452526234.pdf
- http://dermalab.pl/userfiles/file/51111978719.pdf
- http://taxicityplus.ru/userfiles/file/wekafipoziku.pdf
- https://reviewz.eu/app/webroot/files/userfiles/files/xapanufemurije.pdf
- http://avvocatogiuliani.it/userfiles/files/xuxiretabogivu.pdf
- http://kammatrans.com/userfiles/files/76561988527.pdf
- https://zzwgjx.com/d/files/69144000086.pdf
- http://sinoorchids.com/image/file/foxunawalum.pdf
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/161444906b9e53---46188597087.pdf
- https://ldoris.com/upfile/files/20210902011453.pdf
- https://digireg.com/upload/dopivabibizuketutofimebir.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=game+shadow+fight+2+mod+level+max
- 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_off0000dc0c.bin3d76e3128c4254870416075ae428223806dab2ca81dba657fc2c03c20809d1b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC0C | 11008 bytes |
font_01_sfnt_off0000f597.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF597 | 16792 bytes |
font_02_sfnt_off00010da9.bin950167edba55494c437bb7d6f964e6805b709d115ff74dbee09cbc41457b0347 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DA9 | 17564 bytes |
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