MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier strongly indicated maliciousness, supported by heuristics identifying the PDF as a link farm pointing to compromised WordPress uploads and disposable hosting. The embedded URLs, such as https://inwebjor.ru/uplcv?utm_term=genshin+impact+gs6acj775knv, are likely used to redirect users to malicious sites. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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 https://inwebjor.ru/uplcv?utm_term=genshin+impact+gs6acj775knv PDF link annotation
- http://crocepadrekolbe.it/userfiles/files/saxuxafadijoga.pdfIn PDF document text
- https://ctsgroups.asia/images/file/siwadojolejeronidep.pdfIn PDF document text
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139caac93a55---muwoliniguxi.pdfIn PDF document text
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139053caee7f---14174825541.pdfIn PDF document text
- http://robotsuk.com/luckingbros.co.uk/userfiles/files/kanopul.pdfIn PDF document text
- http://netmode.net/app/webroot/uploads/files/83190880486.pdfIn PDF document text
- http://drapikowski.pl/uploaded/fck_files/file/53376654598.pdfIn PDF document text
- http://zhihepvb.com/upload/ckimg/files/202109031621271822.pdfIn PDF document text
- http://dwallacelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bupuvazasad.pdfIn PDF document text
- http://ser-buk.com/userfiles/file/35997828657.pdfIn PDF document text
- http://styrexon.cz/userfiles/file/78136254843.pdfIn PDF document text
- http://yummyschool.com/_UploadFile/Images/file/33982216055.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613019bbb8eff---vusesopogamevexupeni.pdfIn PDF document text
- https://mashura.co/userfiles/files/40572097934.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613051bedff60---xulufeve.pdfIn PDF document text
- http://logicparcel.net/uploadsEditorfile/sijetowof.pdfIn PDF document text
- https://ozanetiket.com/TasarimAcarnet/serhali/upload/files/dadogilame.pdfIn PDF document text
- https://27061010.com/uploads/files/202109151631412704.pdfIn PDF document text
- http://cluboutletmoto.net/campannas/file/61472166531.pdfIn PDF document text
- http://notar-frings.de/userfiles/file/94480201311.pdfIn PDF document text
- http://dejede.com/userfiles/file/80699330393.pdfIn PDF document text
- https://grandiosieventinuziali.it/filesUploads/file/48793470614.pdfIn PDF document text
- http://centralgiving.com/media/userfiles/file/rawigiredaloziseli.pdfIn PDF document text
- http://conditum.nl/userfiles/file/7812451648.pdfIn PDF document text
- http://hwayoung.kr/upfile/files/37348650512.pdfIn PDF document text
- http://xz-brand.com/ckfinder/userfiles/files/zisotobexuma.pdfIn PDF document text
- 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_off0000d975.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD975 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f18c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF18C | 11236 bytes |
SHA-256: 2911bee5e1f5116df2828653128d98d725754575dc2e8ab42c235166a9db9242 |
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font_02_sfnt_off00010bd2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BD2 | 17908 bytes |
SHA-256: aa74a9666b1201248fb41cbafee3f4b98a34c65a6d448add6801790194d131b9 |
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