MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites hosting further PDF files. This suggests a campaign to distribute malicious documents via a link farm, likely as a spearphishing attachment. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://baobianhkhang.com/upload/files/bexurugijiban.pdf In PDF document text
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/0a595481ff951637bb3cb2bd72ef080d/69075157129.pdfIn PDF document text
- http://alexhofford.com/temp/files/file/pigazimebemezesinonezutu.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac412748f9e---bijejef.pdfIn PDF document text
- http://logisticsnetworks.net/ckfinder/userfiles/files/79316817287.pdfIn PDF document text
- http://www.cottagegrad.ru/files/file/zerutavisutarakajebib.pdfIn PDF document text
- https://nhaccugiare24h.com/uploads/userfiles/file/lagumukusenelibukuli.pdfIn PDF document text
- http://animalscipublisher.com/files/upfiles/file/10818855948.pdfIn PDF document text
- https://toananhmedical.com/uploads/files/gufujakokare.pdfIn PDF document text
- http://aj-logistics.com/stock/userfiles/file/pezivupapuvidone.pdfIn PDF document text
- http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/e571a0be3d48ff0aebacb3b09e3db6ae/mazozejuxoralaxudu.pdfIn PDF document text
- https://globalquestconsulting.com/userfiles/files/99770069624.pdfIn PDF document text
- https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/c6d5c30c1f8a7abe37b364a62682f541/zorebam.pdfIn PDF document text
- http://royalleasingny.com/admin/images/file/mavesiramu.pdfIn PDF document text
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c940ff85993---lixupuxofim.pdfIn PDF document text
- http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/zefoparome.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b651eb39e1---tidajisojiramitafozazoma.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd4751aeaa---12816069885.pdfIn PDF document text
- http://xn--szabowski-tub.pl/userfiles/file/18673191233.pdfIn PDF document text
- http://dobrejaja.com/Upload/file/pevatasoderupe.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=pokemon+movie+game+gba+rom+downloadPDF 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_off0000d8fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8FE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f110.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF110 | 17460 bytes |
SHA-256: 1b747416d5d55f8e12343e48886842e12f14fe5d73f1d8d52ffee6bc5e071757 |
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font_02_sfnt_off00011e9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E9E | 10708 bytes |
SHA-256: aa5db5f66083b9c9be0b21a91f95de9c74e3259e65f588809326dd8de6127671 |
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