MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to potentially compromised websites or disposable hosting. One URL specifically points to a PDF file hosted on a compromised WordPress upload directory, suggesting a potential distribution point for further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://ebbers-schilderwerken.nl/uploads/files/52911399232.pdf
- http://thepokeluau.com/uploads/files/tujukewifisukawiwiji.pdf
- https://rockyhotelsgroup.com/uploaded/files/bisinigijeruj.pdf
- https://jungleflightchiangmai.jungle-flight.com/Uploads/files/86884023617.pdf
- http://teewer.mn/ckfinder/userfiles/files/jekukudodi.pdf
- http://zzquansu.cn/d/files/ruvolawize.pdf
- http://abwingssuffolk2.com/uploads/files/dilafejode.pdf
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e4f60e6e8b---43017139969.pdf
- https://pensiuneavalentina.ro/app/webroot/file/gugulutosifedisetedet.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614dfd3b7c6d3---30354338904.pdf
- http://omonetach.pl/foto/ilustracje/file/xixexugo.pdf
- https://fertilizerproductionprocess.com/d/files/rupopivejo.pdf
- https://laflammerouge.ch/userfiles/files/85742742468.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/72acb8230d5132fcd5624658dcf376ea/76946803350.pdf
- http://www.cpnatacao.pt/backoffice/ckfinder/userfiles/files/37054012255.pdf
- http://nbc.ua/design/pic/file/88940593141.pdf
- http://e-motyle.natura2000.pl/imgturysta/files/40452174364.pdf
- http://georgekoldun.com/var/upload/file/wetabodew.pdf
- http://mywayrtk.info/userfiles/file/20064484210.pdf
- http://shengnabei.com/uploadfile/file///2021092712355286.pdf
- http://gopherandsquirrelcontrol.com/admin/images/file/34822785236.pdf
- http://xn--80aadcnaeutgftohcogh8i8dsc.xn--p1ai/pict/file/2799568705.pdf
- http://goddesshair.net/upload/users/files/28577020390.pdf
- http://eur-idea.com/userfiles/file/84376909192.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=barclays+stockbrokers+app+for+android
- 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_off0000b133.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB133 | 16792 bytes |
font_01_sfnt_off0000c945.bin8943a4874df05c21bcb5e4e6ffb1ad8dacb1f53af63e1bf2d00390416c749638 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC945 | 14980 bytes |
font_02_sfnt_off0000ee79.binc9c3ddc0d09805970f91e467b5819c060b93dc137f3bb29b6adb03e7c0452a4c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE79 | 11012 bytes |
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