MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised or disposable hosting sites, which is a common tactic for phishing or malware distribution. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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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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 http://hoya-system.com/uploads/files/202109130714545747.pdf In PDF document text
- https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/97dbc9a9ef37d2c853aa7ff5aea3fb99/vixopaxulede.pdfIn PDF document text
- http://basyapiemlak.com/yukleme_klasoru/userfiles/file/bejuropogedob.pdfIn PDF document text
- http://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/40229784420.pdfIn PDF document text
- http://vanguardhungary.hu/userfiles/file/luvuw.pdfIn PDF document text
- http://ratchee.com/ckfinder/userfiles/files/1099869815.pdfIn PDF document text
- http://locum-system.pl/userfiles/file/36551790349.pdfIn PDF document text
- https://landtop.com/filespath/files/20210907040951.pdfIn PDF document text
- http://trivio.it/userfiles/files/sozezavuniri.pdfIn PDF document text
- http://vizcsap.hu/files/file/55958040549.pdfIn PDF document text
- http://henzefashion.com/userfiles/file/lidizolovesizapu.pdfIn PDF document text
- https://kermanrooz.com/img/files/rizelopoxoruvokobumitami.pdfIn PDF document text
- https://poulinstrapscan.com/userfiles/file/gobubivodalub.pdfIn PDF document text
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/9d5541a3491a33f8346319c62132e5ab/56967747583.pdfIn PDF document text
- http://extrastyle.ee/ckfinder/userfiles/files/mufitotogaropubalodudo.pdfIn PDF document text
- http://pscworld.eu/ckfinder/userfiles/files/34488604486.pdfIn PDF document text
- https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/6e108a71a376f9ce065beb39bf4e3998/wonokerovenebik.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/161406831664ec---wikupobutizasevenuf.pdfIn PDF document text
- https://copacndg.com/images/uploads/files/71232649040.pdfIn PDF document text
- http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/995ca95ed7771c26efb1d3923e54e862/fapevut.pdfIn PDF document text
- http://newbusan.net/FileData/ckfinder/files/20210915_EBA1EA2A6AE4543F.pdfIn PDF document text
- http://residenceraffaellotorino.com/userfiles/files/8965808392.pdfIn PDF document text
- https://bela.geekers.tw/upload/file_folder/file/dobepanevinumer.pdfIn PDF document text
- https://tectrongim.com/uploads/files/93451810979.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=android+messaging+app+apkPDF 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_off00010739.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10739 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011f50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F50 | 10664 bytes |
SHA-256: 610c249a6e4bfbda9f3c9cdc55a5851ed7ea10abb25cb82bcb35fc975ade709d |
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font_02_sfnt_off0001377a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1377A | 17204 bytes |
SHA-256: dd6e35b84633136d6cee344346ec9ee1cc9cc41caf7417bdf9dc807fd6a8ef71 |
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