MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript and a large number of external links. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates that some links point to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The embedded JavaScript is likely used to facilitate the malicious activity, such as redirecting the user or initiating a download. The ClamAV detection further supports the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://belstroyiz.ru/img/file/jabirafibop.pdf In PDF document text
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/d100cf659070d67b7512536317b73b65/ridefoxerikijolavuno.pdfIn PDF document text
- https://cornwallstaffagency.com/userfiles/file/zepalafotevikupis.pdfIn PDF document text
- https://tramtron.vn/uploads/files/files/76577124856.pdfIn PDF document text
- http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/buvinolikexog.pdfIn PDF document text
- https://uzunlarpeynir.com/dursun/upload/files/ximagefajizuvokeb.pdfIn PDF document text
- https://nezrenpin.com/calisma2/files/uploads/58509682916.pdfIn PDF document text
- http://xinshifm.com/userfiles/file/tokogemunemu.pdfIn PDF document text
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe233c72cb---bogukanojixoxiz.pdfIn PDF document text
- http://lideparts.com/userfiles/file/1631894327.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/peluxewoko.pdfIn PDF document text
- https://rinducm1.com/contents/files/mijurotovexopo.pdfIn PDF document text
- https://webdatedepot.com/userfiles/file/74897205109.pdfIn PDF document text
- http://xn--80aafbladvtgxneccoge3bt.xn--p1ai/pict/file/vilaj.pdfIn PDF document text
- http://bukharaalpharetta.com/sites/default/files/file/82594728694.pdfIn PDF document text
- http://aallergy.friend-match.com/upload/files/46841722462.pdfIn PDF document text
- http://teacherandtraining.com/coj_u/KK/userfiles/files/zolubisigubuwezibumewive.pdfIn PDF document text
- http://punaide.com/userfiles/files/69334621830.pdfIn PDF document text
- http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/tufefafegidevibozofikiruj.pdfIn PDF document text
- http://faradtvandor.hu/picture/userfiles/file/9589957526.pdfIn PDF document text
- https://www.studiorosaliabusco.it/ckfinder/userfiles/files/87728891909.pdfIn PDF document text
- http://alconsprom.ru/ckfinder/userfiles/files/2041510528.pdfIn PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1614f27ad272dc---lazefopusexenirof.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=moto+e4+android+updatePDF 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_off0000b102.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB102 | 17252 bytes |
SHA-256: 53310c3cc97029a84927f73917183f57dfdd967dfea7d526ea02bd9cbd9acfff |
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font_01_sfnt_off0000dd4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD4E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f565.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF565 | 10344 bytes |
SHA-256: 99ec9549d87cba8da8ee4c14a5d2ad33b72686ffd0d4384f2590d9b8bfacbb15 |
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