MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm to distribute phishing lures or malware. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://krisoc.ru/uplcv?utm_term=que+es+ser+cr%C3%ADtico+pdf PDF link annotation
- https://fototipia.hu/files/files/83927046974.pdfIn PDF document text
- http://asupuro.com/upload/save_image/files/18965159246.pdfIn PDF document text
- http://stevis.cz/files/file/81777865370.pdfIn PDF document text
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/055de5b7a7c2810879c96ac6e413988b/46307839564.pdfIn PDF document text
- https://aterhesseg.com/up_image/file/79110544678.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/acfe032606b428d122bc2abfe0a0d0fd/govusonov.pdfIn PDF document text
- http://studiogalata.it/userfiles/files/86214146315.pdfIn PDF document text
- http://sys-svinding.dk/userfiles/file/viduxanigavifa.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/6kjcpsqc719ntes271dpe6mdlb/18837251712.pdfIn PDF document text
- https://diarch.in/WYSIWYGImage/file/dopatemafafowigavudu.pdfIn PDF document text
- http://unipsyclinic.com/userfiles/file/20210719070140.pdfIn PDF document text
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/b5674314db22bb5c5331e79f28dbc190/fupevugaxuxu.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a3827c993---vufijataruma.pdfIn PDF document text
- http://sushikyototogo.com/uploads/files/zijugikex.pdfIn PDF document text
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/i1928ev4dvajelmi7g8s8boob4/rupevodusivuf.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/sefipametiruturidokakuwif.pdfIn PDF document text
- https://ce-mi.pl/uploads/userfiles/files/98113884917.pdfIn PDF document text
- https://hostingpazari.com/calisma2/files/uploads/76806922162.pdfIn PDF document text
- http://royalwedding.jp/images/blog//file/resesukuzobetafu.pdfIn PDF document text
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebb8e4b891---lamuputepumukisiwuk.pdfIn PDF document text
- https://billionbosses.com/ckfinder/userfiles/files/rujumenaliwapumefu.pdfIn PDF document text
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/5dthuis0v4uupug3b93t9m3udj/rogopuvuzenuma.pdfIn PDF document text
- http://inannamsao.com/uploads/files/12222528013.pdfIn PDF document text
- https://okazdedziecko.pl/_files/Media/file/bibulo.pdfIn PDF document text
- https://aihr-iadh.org/uploads/FCK_files/file/3026587924.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_off0001a993.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A993 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001c1a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C1A5 | 19376 bytes |
SHA-256: b05b66f46ef3a0de0ad826c61070e7c1215c2a0ff0b1c3559acd18b5c0cfe79c |
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font_02_sfnt_off0001f3e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F3E8 | 10520 bytes |
SHA-256: 7f17ff889581789c0ebb91d8f7a1f66995666fbcbe0151d3c2b8105a69822eca |
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