MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URI heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9848
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 https://queure.ru/uplcv?utm_term=taper+roller+bearing+is+used+to+take+mcq PDF link annotation
- http://drive4smilesontario.ca/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/64027829014.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f687121ed1---55658282550.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4590bc3382---xizivelosegudamodutat.pdfIn PDF document text
- http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/warogegoxafimuvaruzev.pdfIn PDF document text
- http://ersatzmonitor.de/userfiles/file/tozapipa.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b0917830761---bijejibanamapimuzo.pdfIn PDF document text
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/70076c3f7ae01b43f39f0f4218e1aecd/26931507812.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160780944824ad---zolozedixo.pdfIn PDF document text
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/ad8b64db9f5554324be6c3e79b2c92d1/2182004652.pdfIn PDF document text
- https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/426f50cd2eb58affc3944f4c28086b33/43611000738.pdfIn PDF document text
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607437cc59ed3---relapukopibani.pdfIn PDF document text
- http://stalmost.pl/userfiles/file/65368833174.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1606d47712bc99---78716774703.pdfIn PDF document text
- https://zoldlepes.hu/userfiles/file/20071905547.pdfIn PDF document text
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/ol0lan9vff7m6e97iu58ug7eh0/kuzegegeluledanewurafi.pdfIn PDF document text
- https://adasms.fr/userfiles/file/89247782914.pdfIn PDF document text
- http://clarasonic.com/upload/file/6499982892.pdfIn PDF document text
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/4e4cf2664d52b6b9bfa6bfae9917eeaf/kajik.pdfIn PDF document text
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c8cd348049320e96c60266fb447a0b8a/burupi.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/418f01cf9b37a02b380bde9c5b875e41/90704012167.pdfIn PDF document text
- https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/711e61ba0a2665157d29c5d0234d1942/54642743161.pdfIn PDF document text
- https://allcreaturesinc.com/files/files/koxejuzajaselowimovuti.pdfIn PDF document text
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3546e644d---vexovevizukekokipite.pdfIn PDF document text
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b881fff006d---wapevovamoridevunenoke.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607c002eda80c---zezikewitelenirapizofaw.pdfIn PDF document text
- https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/1b6bbbb8a27e8fe2c9c79d75fa3a3a69/29244326720.pdfIn PDF document text
- 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_off0000ef09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF09 | 11296 bytes |
SHA-256: 8c8c94bd86d41fc37d6577915f5e29cb0a1d1ce26ff8d6fd9c3123a77fcd6c78 |
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font_01_sfnt_off000108ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108CE | 16500 bytes |
SHA-256: 7a153b32a26c4443d4f561063573d3d0bca5060880cac2d022b6054c66c5293f |
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font_02_sfnt_off000133a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133A7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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