MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded JavaScript and numerous external URIs, many pointing to disposable domains, suggests a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://chcial.ru/uplcv?utm_term=download+farming+simulator+18+free PDF link annotation
- http://bon-mar.com/fck_user_files/file/verojisu.pdfIn PDF document text
- http://gd-weimi.com/upfolder/e/files/20210912044836.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/2f04ce482a6e12e5ae5c5fc90e9dfa19/8452447876.pdfIn PDF document text
- http://kompassztuki.pl/Image/files/53953460872.pdfIn PDF document text
- https://hanurichurch.org/ckfinder/userfiles/files/relujagekor.pdfIn PDF document text
- http://entryexpress.online/chapter_images/files/desezizobezokagasemi.pdfIn PDF document text
- http://leasingtowers.com/ckfinder/userfiles/files/39781613116.pdfIn PDF document text
- http://ordineveterinarivenezia.eu/userfiles/files/pirakiraxaruxugow.pdfIn PDF document text
- https://china-glass-mosaic.com/userfiles/files/20210906_160343.pdfIn PDF document text
- http://yibetter.com/data/files/45937504275.pdfIn PDF document text
- http://rotarybrescello.it/userfiles/files/87645588255.pdfIn PDF document text
- http://hotelbellevuepalermo.com/userfiles/files/fikosikukezoxedusewifimas.pdfIn PDF document text
- https://semut73.com/contents/files/32200138170.pdfIn PDF document text
- http://orsini-blasioli.it/userfiles/files/34437457105.pdfIn PDF document text
- http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/wadefitodobal.pdfIn PDF document text
- http://abwnickersonplaza.com/uploads/files/95561866408.pdfIn PDF document text
- https://rougezenekar.hu/files/file/rimuroxijiwikolikibe.pdfIn PDF document text
- http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89921492373.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132bdd93cc34---fulozetelirapiwulone.pdfIn PDF document text
- https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/72071046535.pdfIn PDF document text
- http://chatyzvule.cz/uploads/pebanajizasol.pdfIn PDF document text
- http://getsolarny.com/userfiles/file/nasesiwijaf.pdfIn PDF document text
- http://www.koeru.eu/failid/file/53510328335.pdfIn PDF document text
- https://rt9.rspo.org/ckfinder/userfiles/files/34074726634.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b8b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8B4 | 11144 bytes |
SHA-256: 3bb052c5bca435310b36f7cc146365d24a87e54d15e1de287e05f49f18b26f42 |
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font_01_sfnt_off0000d298.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD298 | 1820 bytes |
SHA-256: ef4c56b83544acc0eae329b123dcb13384a4443b8ee25b6b011fcec9f25c534c |
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font_02_sfnt_off0000db1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB1E | 21472 bytes |
SHA-256: 2426d202a1ad6ccb8283d9510a57d861fa1e70bb3f8cdb5f01e6073195f69240 |
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font_03_sfnt_off000111ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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