MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file is identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm. The PDF contains numerous external URLs, some pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious sites. The presence of a link farm and compromised hosting points towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://dayuntang.com/assets/uploads/ckedit/files/20210903002259.pdf In PDF document text
- http://tetrafluoro.com/upload/files/jalivizilo.pdfIn PDF document text
- http://shangrilatheshow.com/ckfinder/userfiles/files/newub.pdfIn PDF document text
- http://oxigensupplies.com/shipinc/userfiles/files/povasukimodag.pdfIn PDF document text
- http://www.syrahresources.com.au/application/third_party/ckfinder/userfiles/files/34605839936.pdfIn PDF document text
- http://szjwwj.com/userfiles/file///fidosirupabigozexitufa.pdfIn PDF document text
- https://auditorescr.com/ckfinder/userfiles/files/kiwemixunulaliruwupo.pdfIn PDF document text
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/732e601357fe22b42c4cb572adb04a00/vavepazopobisifutumefove.pdfIn PDF document text
- http://secureyun.cn/uploadfile/file///2021091320335859.pdfIn PDF document text
- http://888chji.com/userfiles/files/duzogilujagefazunuxikiwa.pdfIn PDF document text
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612eaac72a1f5---zodezidadafozenuromireri.pdfIn PDF document text
- http://lncxjzxxw.com/upload_fck/file/2021-9-12/20210912052424481831.pdfIn PDF document text
- http://terezszilvia.com/images/uploaded/file/63826973326.pdfIn PDF document text
- http://cuboni.com/uploadfile/hong202109140704125716.pdfIn PDF document text
- https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/ae175ac9c315d2426ffbafceb3b17c35/gameruvesesabitimolofi.pdfIn PDF document text
- http://istanbulballoons.com/ckfinder/userfiles/files/susopilususur.pdfIn PDF document text
- http://js-space.de/userfiles/file/getokibirejifosuxabedal.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1612f170a7706a---55764487000.pdfIn PDF document text
- http://citra.cl/userfiles/file/42160615603.pdfIn PDF document text
- http://cuoredicane.it/userfiles/files/lerifisesexobexuredakuz.pdfIn PDF document text
- https://trisyscom.com/userfiles/file/mufawepowu.pdfIn PDF document text
- http://sevennews.com.br/ckfinder/userfiles/files/jojatekari.pdfIn PDF document text
- http://food-cloud.com/home/food-cloud/www/site/site/data/files/39068631.pdfIn PDF document text
- http://mictrogiang.com/userfiles/files/fusazawiwodadukewidib.pdfIn PDF document text
- http://bluebirdcanada.com/FileData/ckfinder/files/20210906_26DA659122065C55.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+format+moto+g6PDF 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_off0000e235.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE235 | 18500 bytes |
SHA-256: 048a80e4b86426ab0454e9a949775375f7beab4da0e784a8eb7c33dba51eb3e5 |
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font_01_sfnt_off000111db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111DB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000129f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129F2 | 10260 bytes |
SHA-256: 7ca99ef3b841101105722bced7ea06a73d5808b905f48385cae608437a7740b2 |
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