MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm for SEO manipulation or malware distribution. ClamAV and ML classifiers confirm its malicious nature, with the embedded JavaScript likely responsible for initiating the malicious activity, such as downloading a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
Heuristics 7
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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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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://www.aamuhsv-madisonalumni.org/files/files/6046674379.pdf
- http://heathrowairporttaxi.website/userfiles/file/17166139878.pdf
- http://schuetzenfest-hemeringen.de/ablage/userfiles/files/92995040286.pdf
- http://kastely-vacduka.hu/fileok/file/73280543441.pdf
- http://phrabat.net/UserFiles/File/3262134685.pdf
- https://eqonetech.com/upload/userfiles/files/58569778389.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16144d99176622---pipibodatewifubob.pdf
- http://siamsnail.com/media/userfiles/files/27755829418.pdf
- http://koreabulk.net/userData/board/file/fulamipuponuvurusa.pdf
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1615c203504e93---28388459454.pdf
- https://emenu.hu/editor_up/rubukusep.pdf
- https://12shio2.com/contents/files/zizowinitegexuwiziluwuven.pdf
- http://arndt-fahrschule.de/userfiles/file/mavuwopulom.pdf
- https://snoman.mb.ca/ckfinder/userfiles/files/93866829911.pdf
- http://alfamar.travelshops.pl/userfiles/file/25064549348.pdf
- http://cartopack.com/Images/file/94149434291.pdf
- http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/lobefunanapebusem.pdf
- http://mawratanews.com/armedia/uploads/files/xemolinoxuxoxebu.pdf
- http://chronocertif.com/userfiles/file/62816766783.pdf
- http://sahcarpets.com/userfiles/file/79319360677.pdf
- http://sfipl.in/userfiles/file/21970027352.pdf
- https://altinhediyeler.com/calisma2/files/uploads/49895883783.pdf
- https://lingchuanfloor.com/app/webroot/userfiles/files/jininox.pdf
- https://mrdak.cc/uploadfile/files/julum.pdf
- http://adfaveo.com/image/files/20210923_084521.pdf
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/9lfcd7prm2d0donnradehp5ihq/morejitu.pdf
- http://pferdplus.at/sites/pferdplus.at/files/file/kapuzakipukup.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=nail+shop+on+page+and+grand
- 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_off0000e3e9.bin9afb84989a26898009fe4bcc2384ee8f0d0016b640172758c81a062db30788f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3E9 | 19500 bytes |
font_01_sfnt_off00011708.binacbb809300270e28d7b2db27c26c761cab9e4ee9cecc75acc20d4cccd39e59ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11708 | 10548 bytes |
font_02_sfnt_off00012ec3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EC3 | 16792 bytes |
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