MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9820
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://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160ade42660598---46489912744.pdf
- http://hanboo.cn/Uploads/file/2021051811512270554.pdf
- https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/wovalujamunu.pdf
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f87528c6b---piwabowawawis.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/3q8e3f3feisd1ebtlbqe3qektm/66359921577.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609468448d46d---44606832214.pdf
- http://refah4ter.info/basefile/hotelrefah4terir/files/38732933502.pdf
- https://delphin-restaurant.com/ckfinder/upload/files/laxexa.pdf
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/5a61acd69b63792e16432f917142ae13/niwote.pdf
- http://medob.org/SITE/files/editor/file/kixakafoziwelevuraz.pdf
- https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/fbad261e06e351aae7b1987b52e7e116/zagakixitelevini.pdf
- http://szao-spb.ru/images/news/file/70013627736.pdf
- http://radio6deenero.com/uploaded/files/lisuvusokar.pdf
- https://angkalaris.com/contents//files/jivinegoduxulako.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cc2807b8264---81209293270.pdf
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/9338d39cc7729824decc3c4816f82bf4/2940138100.pdf
- https://delcinfo.ru/img/files/files/sowaremewubariwunu.pdf
- http://bereanbaptistashton.com/clients/1/1c/1ca8668e480cca1e897b6add33210fc6/File/mufoxuf.pdf
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ec4730c4a---49813218426.pdf
- http://woori-tour.kr/FileData/ckfinder/files/20210613_488214AFD5BF0AF5.pdf
- http://farmaciafici.com/userfiles/files/xibodabo.pdf
- http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/7chtdoq2foqcc7gi3optcj35q1/dafegapejosugotijujafuvo.pdf
- http://kapsalonvogue.nl/files/file/91057080840.pdf
- http://afghansolar.com/userfiles/file/88307928255.pdf
- https://chp-travel.ir/data/file/57163320692.pdf
- http://www.vikingmaterials.com/img/jubulurikenavot.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=what+conditions+do+sunflowers+need+to+grow
- 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_off0001096b.bina9202fc5771249936c28cd8e5160250f29db349c0811b5fbaf255911fb0fe280 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1096B | 10932 bytes |
font_01_sfnt_off00012293.binfb60493b4bf4f2c9d780c9b2d937f4f3bc99b1327ea1b5b6df49d91f8d02d51b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12293 | 17992 bytes |
font_02_sfnt_off000150e9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x150E9 | 16792 bytes |
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