MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated, preventing a clear understanding of its direct lure, but the overall structure and URL analysis indicate a phishing or SEO poisoning attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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://automsystem.com/UploadFile/file/20210919014506336.pdf In PDF document text
- http://sayarbobinaj.com/file/99271121379.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613548e399f31---77055338211.pdfIn PDF document text
- http://climacom.eu/userfiles/files/17339320003.pdfIn PDF document text
- http://bukharaatlanta.com/sites/default/files/file/37007331648.pdfIn PDF document text
- https://learningsolution.ca/userfiles/files/nenabigafopapisa.pdfIn PDF document text
- https://beauti-full.ru/uploads/files/87134065537.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/1980cc4918b8e0ba47b6e483b04c6bce/82913316682.pdfIn PDF document text
- http://ntvietnga.com/upload/files/42749921531.pdfIn PDF document text
- http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/92277b7c987bd4f923882ee5eac3347e/89331084231.pdfIn PDF document text
- http://kcntanduc.vn/img_duhoc/files/bekukexitamu.pdfIn PDF document text
- https://ontogepszerviz.hu/editor_up/kogijosafanepebow.pdfIn PDF document text
- http://didula.com/img/file/91829246782.pdfIn PDF document text
- http://dtyxbpzx.com/filespath/files/20210906023152.pdfIn PDF document text
- https://ideylia.fr/uploads/file/veluwanowadezip.pdfIn PDF document text
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1612eba8641ea5---45745331106.pdfIn PDF document text
- https://www.emcp-pmce.ca/_includes/ckfinder/userfiles/files/76843677009.pdfIn PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/8c2a9fdddafc1a6795249aa9a6edc075/375263562.pdfIn PDF document text
- https://intersensor.ro/v2011/Files/fck_upload/file/59105423984.pdfIn PDF document text
- https://mklaassen.nl/images/file/lefofimagogare.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=flash+games+you+can+still+playPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e8a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8A3 | 10912 bytes |
SHA-256: 071228503c7c7685ecef6306f088e99c96aef19d31fff91693a0e9be4b58ebd6 |
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font_01_sfnt_off000101bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101BB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000119cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119CD | 18328 bytes |
SHA-256: 51b262f0d6f33ddb54ee67d2d0027f716b6194995a3c4f9dbc075c4853ff664d |
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