MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it's part of a link farm designed to redirect users to malicious sites. The presence of embedded JavaScript, though not fully detailed, indicates potential for further malicious actions like downloading second-stage payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 https://pistant.ru/uplcv?utm_term=pdf+materialismo+dialectico PDF link annotation
- http://fszhenjia.com/upfolder/e/files/20210828212255.pdfIn PDF document text
- http://romengo.com/ckfinder/userfiles/files/rubonipubogidi.pdfIn PDF document text
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/v55ode957v4lble5cbtlt4etoi/10624518095.pdfIn PDF document text
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/89fb8189b9d193a46627bce807714956/42790264105.pdfIn PDF document text
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd24a6ce3b---jeruteb.pdfIn PDF document text
- https://www.area-tlc.com/public/ckfinder/userfiles/files/nexirozupazagos.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/a0bnjlk0l9t2ljo2tupl2a18k4/getumodabuf.pdfIn PDF document text
- https://clickkedai.com/userfiles/file/talagavefelotarivogoki.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/60455820065.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/62eef5e1b4a01ad5e42535d8792cee78/58950200127.pdfIn PDF document text
- https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf8f40dcfa---puvagepodotupebadopumexiw.pdfIn PDF document text
- http://maekuangudomthara.com/ckfinder/userfiles/files/41480678340.pdfIn PDF document text
- http://www.lugashotel.com/data/editorfile/keduwefabape.pdfIn PDF document text
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/fgq7cisb1d20893iaacegdit5l/nifufujunijegefimamerelu.pdfIn PDF document text
- https://topaldanang.com/uploads/image/files/jevevofajibewepodigibof.pdfIn PDF document text
- http://thietbiotovn.com/Images_upload/files/totavewiriwopilozimesivas.pdfIn PDF document text
- https://pieseautocomenzi.ro/userfiles/file/kovimozixirumus.pdfIn PDF document text
- https://smsenerji.com/resimler/files/2512483923.pdfIn PDF document text
- http://diversecityuk.com/userfiles/file/8378583025.pdfIn PDF document text
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/f231cdc49b6e0b0d019a1b6472808219/44835882675.pdfIn PDF document text
- http://jrpst.pl/userfiles/file/78494755930.pdfIn PDF document text
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609137fee3723---9967031805.pdfIn PDF document text
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608914582069a---67619580860.pdfIn PDF document text
- http://begemot-rus.com/uploadfiles/file/2021061404512773499.pdfIn PDF document text
- https://gtselect.fr/ckfinder/userfiles/files/15525475353.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_off0000e0d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0D8 | 17288 bytes |
SHA-256: 9bf31a1202f29651153a4c34aca1e8c894999859bdb7b84b7bcd5f150a7f7e42 |
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font_01_sfnt_off00010da4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DA4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000125bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125BB | 10532 bytes |
SHA-256: d08dc3ed673187df12e12d42e4502c57d7525a3847b2316666e2169e5b9052ec |
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