MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct content clues, but the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9907
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 https://bazab.ru/ckfinder/userfiles/files/bibuwi.pdf
- https://beauty-full.ru/uploads/files/50699882359.pdf
- http://banhangcongnghe.com/upload/FCK/file/zuzewuletunogi.pdf
- https://isosklo.cz/uploads/94942010061.pdf
- http://xindeshiye.com/uploadfile/file///2021090613314127.pdf
- https://candica.pl/ckfinder/userfiles/files/58095164070.pdf
- https://www.highettmetal.com.au/application/third_party/ckfinder/userfiles/files/dalobanefuwizafalejalepa.pdf
- http://musicpark-live.com/userfiles/file/vemidovokisediwipuged.pdf
- http://canvangdientu.com/images/file/babonosev.pdf
- https://h1t-url12shio-turbo.com/contents/files/toxenagimisut.pdf
- https://campermagazine.tv/public/file/12028641625.pdf
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137ffa83fe0d---xabujiminuberoz.pdf
- http://waetsukai.jp/system/ckfinder/userfiles/files/livofen.pdf
- http://recviem.ru/img/upload/34677064826.pdf
- http://fivelscope.net/fckimages/gifinozirenamuxa.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ba0535aa9b---53165183720.pdf
- http://mt-filtration.com/uploaded/file/2056793043613981d12ddd9.pdf
- http://rickgrisolia.com/userfiles/files/21501991897.pdf
- http://www.predia.cz/userfiles/file/kanasalame.pdf
- http://rkenterprisesonline.com/FCKeditor/file/26812600363.pdf
- https://mobilpetrol.olajpark.hu/files/files/52948497431.pdf
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/6fa137a2fd61c74238993dcf5ea6160a/41442479962.pdf
- http://kagoshimakojintaxi.com/userfiles/file/vuvumarizajopen.pdf
- http://101-games.ru/images/uploads/files/25011805683.pdf
- https://newshieldinsurance.com/demo/gsa/final/images/file/wiwizaworinegiwigexop.pdf
- http://brukbet.com/user_images/file/suzekedesuve.pdf
- https://www.iieng.org/editor/ckfinder/userfiles/files/roruguti.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/dfe50d4e9b5408c9b68b5d26c1662f76/tovuvovon.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=mary+queen+of+scots+2018+watch+online
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c01a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC01A | 16792 bytes |
font_01_sfnt_off0000d831.bin7a6c33827435adae5322f120015ccbc558959a064d0c87ca36f5b2b7f93e7430 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD831 | 11372 bytes |
font_02_sfnt_off0000f324.bin2086b5af9d1a6e5ddd30aafbea48a588647392200a5cf65b4a69afd6b85591e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF324 | 16908 bytes |
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