MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This 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 numerous embedded URLs pointing to potentially compromised or disposable hosting sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
Heuristics 6
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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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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://roberlo.cz/www/files/file/fotiletovawup.pdf
- http://fuhua.tumujike.com/assets/upload/files/202109121625139299.pdf
- http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16135c03abeddb---23246985323.pdf
- https://comfort8889.com/upload/files/31182671275.pdf
- http://fratellibeninca.com/images/file/30987848678.pdf
- http://madmojo.com/fckupload/file/89117379228.pdf
- https://priscar.com/documents/files/54657237207.pdf
- https://albertoangel.sinecsas.com/ckfinder/userfiles/files/malipusajikovubekovetabav.pdf
- http://chpcentre.com/files/file/17681968286.pdf
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16142543fc6b3a---wazajotosuxefovozi.pdf
- http://hstairan.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/sarubuxelavisof.pdf
- http://atenngo.com/admin/sites/site/documents/17646803606.pdf
- http://kisito.com/userfiles/file/2941195447.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/31699504844.pdf
- http://idominjazz.com/fckeditor/userfiles/image/kopanefulos.pdf
- http://batiment-tunisie.com/userfiles/file/27142350602.pdf
- http://ahchala.com/img/file/tunefitokativaxem.pdf
- http://ingegneriarossi.it/userfiles/files/vudajosisolikisag.pdf
- https://pagodatalk.com/_UploadFile/Images/file/21192111441.pdf
- http://freeware-software-download.de/uploads/editor/file/fakanuz.pdf
- https://hanoihome.net/img_duhoc/files/kiruf.pdf
- https://study-abroad-travel.com/ckfinder/userfiles/file/90564692244.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613ddcd41d7c4---46395863394.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=the+walking+dead+season+10+episode+21+watch+online
- 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_off0000cf0e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF0E | 16792 bytes |
font_01_sfnt_off0000e725.binf7caaa197e2e044cf857fb6ccff602c8aa417d7d5eeb19fa6b8d4e8f507de2fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE725 | 11128 bytes |
font_02_sfnt_off000100fc.binea5cbdefc31c1d8d9b058d2326ab08343a943a87ad758a115c7f3c43149b98c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100FC | 17104 bytes |
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