MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, a common technique for executing malicious code or redirecting users. The presence of numerous external URIs, many hosted on disposable or compromised domains, strongly suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://usaoxin.com/userfiles/2021-8/file/delamajokef.pdf
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160be542a5d8d7---2367876621.pdf
- http://arcstema.com/userfiles/files/tonefavexometufedis.pdf
- https://i-chat.tw/js/ckfinder/userfiles/files/sesazagam.pdf
- http://mosvag.ru/img/lib/file/19656652749.pdf
- https://fullhousetourism.com/UploadFiles/file/20210524062444191.pdf
- https://hasekei.jp/userfiles/file/19143986934.pdf
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/85bc6e56a51164d7c4ec8f6bc2b7d702/61049878042.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160ecaaf7c8c74---ganepuxakosodovoxexizaz.pdf
- http://jtylek.pl/Upload/file/50493984562.pdf
- https://summit-christian-academy.com/scauserfiles/files/pakawebododukuwuwe.pdf
- https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/uectk1h8qo8fqmm8ee43qkr7d0/tedelaruxuvesufedik.pdf
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b221c4b3c4e---70395466805.pdf
- http://beergolfers.com/blog/images/file/20605774640.pdf
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/d3oot4dhc7ud1bqm4sfu5kke3a/fabizegozedul.pdf
- http://pappteam.hu/userfiles/file/76064559700.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16072a28325aa0---63027467059.pdf
- https://aghs.in/ckfinder/userfiles/files/bejapaketixuxeroxasato.pdf
- https://es21sys.com/userfiles/file/2312478493.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/38ac79fb995f12ae5be7d6c5d4f54059/13607863336.pdf
- https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/5hmf8b54frunv5j7js1bi9gqfp/65392499904.pdf
- http://whitebearlakeclassof1970.com/clients/0/05/05755deafc47004aae723e515cf08a6f/File/zugafupupavosodomimofuvas.pdf
- http://balbu.hu/uploads/news/file/31975353481.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=telling+the+time+quarter+to+and+quarter+past+free+worksheets
- 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_off0000d414.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD414 | 16792 bytes |
font_01_sfnt_off0000ec2b.binbb6f3e05eb6707347a7b464931c4ed01a711ea721c713f034d5a3d6553a2cfb7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC2B | 11332 bytes |
font_02_sfnt_off00010621.bin13c4ba8562f4311b3705eaa270ac32ba350a0302a4d7203ecf6afb4955552898 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10621 | 18112 bytes |
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