MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. It also features a large number of external links, many pointing to compromised websites or disposable hosting, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 https://ketchas.ru/uplcv?utm_term=como+limpiar+memoria+interna+android PDF link annotation
- https://www.shamshabaddiocese.org/files/js/ckfinder/userfiles/files/dekoforuzupi.pdfIn PDF document text
- https://travelinnsuites.com/nbloom/fckuploads/file/jedegiminuv.pdfIn PDF document text
- http://compagniaviaggi.gattinonimondodivacanze.it/themes/userfiles/files/pezotoxedozo.pdfIn PDF document text
- https://assignmentmart.com/ckfinder/userfiles/files/78144607789.pdfIn PDF document text
- http://dienmayngalinh.com/img/files/18463181764.pdfIn PDF document text
- https://mimpishio1bet.net/contents/files/gulanugejuf.pdfIn PDF document text
- http://www.jucadent.es/ckfinder/userfiles/files/viked.pdfIn PDF document text
- http://africareview.in/userfiles/file/66180444685.pdfIn PDF document text
- http://movietek.vn/hinh-anh/files/87130930725.pdfIn PDF document text
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/07c50c78ed935e92453f4028c76412b4/12073849945.pdfIn PDF document text
- http://neuchina.org/userfiles/file/bomisadiwevuzipugumi.pdfIn PDF document text
- http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/68778225157.pdfIn PDF document text
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/fr5r5k0bo8rka2eloikk6da9f7/tulamexonovupego.pdfIn PDF document text
- http://sushimura1.com/uploads/files/wolevomu.pdfIn PDF document text
- http://csc-020.com/userfiles/file/20210917041914_fv5ftr.pdfIn PDF document text
- http://yourmoneyyourbank.com/uploads/File/jarivozoxesepem.pdfIn PDF document text
- https://digitaluzaktanegitim.com/calisma2/files/uploads/zebomuf.pdfIn PDF document text
- https://semot.com/Store/userfiles/file/48822118060.pdfIn PDF document text
- http://wuyioutdoor.com/userfiles/file/80696092935.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613f129f624b9---45988332519.pdfIn PDF document text
- http://oresteruggiero.com/userfiles/files/bapirerim.pdfIn PDF document text
- http://labonscafe.com/userfiles/nilozanemojuladoxuzopu.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_off0000e443.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE443 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fc55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC55 | 19496 bytes |
SHA-256: 45fce445b7e229dc17a8bc3acbe21c4ddf16a571ba089ad792d9a8d1f4075c65 |
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font_02_sfnt_off00012e32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E32 | 10416 bytes |
SHA-256: 146700912ed49f821965037483e098691fcea89c72de0625a9b972dc95985b8b |
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