MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics indicate the PDF acts as a link farm, directing users to multiple compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were directly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b38a898bc0a---zitugemudatojewixa.pdf
- http://www.allatpatikapecs.hu/images/file/lagupojonirukifaga.pdf
- https://akproauto.net/nbloom/fckuploads/file/65835845178.pdf
- https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/vekolivuni.pdf
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/37jroblumebivh3bjd15ovm0m1/70613395158.pdf
- https://ketdoanbus.com/webroot/img/files/samoduv.pdf
- https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/1dd6c217a9271e82387eca0e4e97312e/kumisozuwoxorevilewozir.pdf
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c640d939ace---72487378556.pdf
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a667e9c224c---kewam.pdf
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e56e16714---69765317132.pdf
- https://menu2uplus.com/images/file/naturoruv.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16090caf396928---26732042865.pdf
- http://ccymgr.com/clients/a/ab/abc9983c1712fd324c9320bcfcf975a8/File/kuvemitu.pdf
- https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/353013d46477c3ef00c1810c56f30905/89325653198.pdf
- http://fresh-j.info/images/uploadedimages/file/sumafogakilomilujilak.pdf
- http://morebricks.com/ckfinder/userfiles/files/82492298600.pdf
- http://apsencollege.org/test/fckeditor/file/12433993999.pdf
- http://ceomit.com/fckupload/file/35604620706.pdf
- http://anhuishangbiao.com/upload_fck/file/2021-4-29/20210429101650270418.pdf
- http://hkt-optics.com/hkt/images/userfiles/file/luzomajiwirepuvalilas.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da65176cce---zenizupezudatuwisizoxupe.pdf
- https://webmenuplus.com/images/file/dupeguxinale.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=back+to+school+welcome+message
- 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_off0000cda4.bin43482ae682221d2e951e94ada75e4a0eed40630447a127816491947b2e507d8c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDA4 | 16852 bytes |
font_01_sfnt_off0000f973.binea70bdd46579ac7c5632122f1a61b13c3b7844b82d331b6810d905aa25d75521 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF973 | 10612 bytes |
font_02_sfnt_off000111e8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111E8 | 16792 bytes |
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