MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF sample was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous URLs pointing to disposable hosting and compromised CMS uploads, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of many external URIs strongly supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://gyobel.itpublic/file/45827596025.pdf In PDF document text
- https://groupunsur2.com/contents//files/62059752076.pdfIn PDF document text
- http://thankschicken.com/uploads/files/75605189480.pdfIn PDF document text
- http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a634159f107---lomuvulepo.pdfIn PDF document text
- https://dynasty888.com/image/files/20210601_024854.pdfIn PDF document text
- http://dijladentalcenter-qa.com/userfiles/file/3196056084.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/fedizafarok.pdfIn PDF document text
- http://podolsk-kondicionery.ru/upload_picture/file/gosirinabutem.pdfIn PDF document text
- http://manpukulivermore.com/uploads/files/76057456545.pdfIn PDF document text
- http://jarosi.hu/files/file/jofud.pdfIn PDF document text
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/b35cb705d2f8ee6e592200fb8fdeebc5/27386504884.pdfIn PDF document text
- https://wfca-czech.cz/temp/userfiles/files/22092626162.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c30724b2fcc---kafevazobubukotonotukepig.pdfIn PDF document text
- http://selfmadefilms.nl/userfiles/files/85820113635.pdfIn PDF document text
- http://allnatureint.com/userfiles/file/kixamisixiwe.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a20504eb2eb---51580700182.pdfIn PDF document text
- https://fullhousetourism.com/UploadFiles/file/20210701202118148.pdfIn PDF document text
- http://lyzph.com/userfiles/file/Fl202107300423229475.pdfIn PDF document text
- http://historia-bfured.hu/userfiles/file/losavugazefotufaz.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=nespresso+manual+coffee+machinePDF 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_off0000b5c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5C9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cddb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDDB | 17236 bytes |
SHA-256: 4cafdb8807140688691dd4130bb699511fb9187ad3b1945d5ecc51f539250d69 |
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font_02_sfnt_off0000fa3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA3F | 10724 bytes |
SHA-256: 4840bc39a5e1fb38061c70a851aff333862d3f2c647535778b7a5ad45e3ef649 |
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