MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It contains numerous external links, many pointing to disposable hosting or compromised CMS upload directories, suggesting it functions as a link farm. The presence of embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further support this, indicating the document's primary purpose is to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://isosklo.cz/uploads/34178431734.pdf In PDF document text
- http://kerekesvillszer.hu/UserFiles/file/fipajefesib.pdfIn PDF document text
- https://lordoptika.hu/files/files/kugofowuwukofutijuzut.pdfIn PDF document text
- http://xecuoihuyhoang.com/uploads/userfiles/file/navaviwaso.pdfIn PDF document text
- https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/94qchu3guu77lru3f841qvlv9t/44193881159.pdfIn PDF document text
- http://macro-e.com/app/webroot/userfiles/files/mupafukulewewufitaga.pdfIn PDF document text
- http://tubelessons.net/cms_images/file/5583800699.pdfIn PDF document text
- http://gr-chem.com/upload/files/fibusafapoxofagarulokutu.pdfIn PDF document text
- http://americasbestwingsbeltsville.com/uploads/files/70454456428.pdfIn PDF document text
- https://acrgruppe.de/userfiles/file/89059897587.pdfIn PDF document text
- http://iwilldoit.ru/uploads/files/files/bujapukomuzijolujupafides.pdfIn PDF document text
- http://www.sname.org.tw/sname/ckfinder/userfiles/files/62325260688.pdfIn PDF document text
- http://ain.proximeo.com/ckfinder/userfiles/files/sumipedukujo.pdfIn PDF document text
- https://bliznacite.com/files/56705322375.pdfIn PDF document text
- http://budgettranslation.hu/sites/default/files/file/51007150064.pdfIn PDF document text
- http://taxplus.in/images/contentimages/files/kojisubemozukenowapodemed.pdfIn PDF document text
- https://sandp-engineering.com/ckfinder/userfiles/files/nadamases.pdfIn PDF document text
- http://ilovegabal.net/fckeditor/_upload/file/91845274556.pdfIn PDF document text
- http://hosteleriayvending.com/ckfinder/userfiles/files/90048250687.pdfIn PDF document text
- http://gaushalango.com/uploaded_files/userfiles/files/82960164712.pdfIn PDF document text
- http://azco.friend-match.com/upload/files/72873090447.pdfIn PDF document text
- http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fosixemozanofajop.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef55763b17---63267020232.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/l6so9seldf12n9tl6ekfmq84t9/86714075368.pdfIn PDF document text
- https://bomando.bomsolar.com/uploadfiles/files/resetugosilanedut.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=avengers+endgame+full+movie+torrentPDF 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_off0000da20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA20 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f237.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF237 | 10844 bytes |
SHA-256: 2c202f0b986e76d485b577621df66f5add33c6c0761e29fd07ac0dbec175a9c0 |
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font_02_sfnt_off00010b16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B16 | 17964 bytes |
SHA-256: c7445d0cf18c612e17cf5672a4c807786fd1c24ab0fbe8b861560c28d980c958 |
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