MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to compromised CMS upload directories, which in turn host other malicious PDFs. This indicates a link farm designed to redirect users to further malicious content, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://kechengchem.com/upload/files/jalovunotuluwipusemil.pdf
- https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/tfjcb7dsnr3bu0s6q7fj0r3ps7/kedawokazupof.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebabc4a37b---zowatozaxa.pdf
- https://heatingboiler.ca/fck_upload/file/vujipilozobuzuf.pdf
- http://vector-luczak.pl/new/fck_user_files/file/91906389706.pdf
- https://fullmagicweekend.com/ckfinder/userfiles/files/16779951033.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62fe54845---xexoke.pdf
- http://xaydunghoangthanh.com/img_duhoc/files/nozusip.pdf
- https://ivanamihic.com//files/16094770575.pdf
- http://pmke.cz/pictures/files/4188816129.pdf
- https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/2c2c6e699b992a172be997f12bca1f6b/xepimiz.pdf
- http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160987f1936d09---siwonovafirosolef.pdf
- https://corpeverest.com/ckfinder/userfiles/files/20476538956.pdf
- http://strandedtattoo.net/file/zewesosofoparajaroxo.pdf
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/1bc21b0a3092e3774a6b7a04f26fd8bf/vojunizumoxafo.pdf
- https://phoenixturkey.com/upload/ckfinder/files/27271768493.pdf
- http://naitikfashions.com/ckfinder/userfiles/files/powafiwezogugevirapeki.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/688299f6a170cda97f877cc575fe4b7a/60905060293.pdf
- https://cornerstonelaw.eu/userfiles//file/rewopasizixedojujolirujag.pdf
- https://batikatravels.com/userfiles/file/40821352764.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/f07f69a2f2adbbb63497d68d10589b0c/52639369275.pdf
- http://sitepride.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/zoguzexixuja.pdf
- https://flardochform.se/userfiles/file/savinox.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=type+of+pumpkin+for+soup
- 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_off0000e0ed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0ED | 16792 bytes |
font_01_sfnt_off0000f904.bin6145fe8f854ab97e88f2e7d63ace4468adbbc510a802297be2e7b707092d0561 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF904 | 10480 bytes |
font_02_sfnt_off000110d6.bine9ca91eedccf33a22188c8228a3d3e9434e7c859cff6d114c062b56ae0e5ab92 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110D6 | 17928 bytes |
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