MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The presence of these link farms and the overall detection as a phishing trojan indicate an attempt to lure users into potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
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://alptw.com/images/files/83794601061.pdf In PDF document text
- http://kme-kme.cz/files/file/77213200228.pdfIn PDF document text
- https://lifeteacher.tw/uploads/files/202108262323347720.pdfIn PDF document text
- http://tw-echen.com/uploads/files/202108260522452345.pdfIn PDF document text
- https://syteq-pro.com/userfiles/file/7565122455.pdfIn PDF document text
- http://blesk-stroy.ru/userfiles/files/ledovimadotuvunavan.pdfIn PDF document text
- http://ideviceplus.be/app/webroot/files/userfiles/files/jixofukajakululimel.pdfIn PDF document text
- https://alakharia.com/public_html/userfiles/file/padokisoxukopefome.pdfIn PDF document text
- http://mea-travel.pl/userfiles/file/pagiwaweterapawepe.pdfIn PDF document text
- https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/d1ff7e7dd437d2c3d6eac4f7665a0e5c/85471194432.pdfIn PDF document text
- https://sharadsangam.org/UserFilesTwo/file/binuvugab.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c507631087e---89725281792.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/v1228vfk1icmn1ie0cjaodeao2/68047529347.pdfIn PDF document text
- http://kondicionery-krasnogorsk.ru/upload_picture/file/pobenofu.pdfIn PDF document text
- http://criminisiepartners.it/userfiles/files/lizarokobiz.pdfIn PDF document text
- http://twinmd.ru/userfiles/file/tanaxipunikawulaxeto.pdfIn PDF document text
- https://bazab.ru/ckfinder/userfiles/files/34845455497.pdfIn PDF document text
- https://samarpanbharat.org/trila/userfiles/file/nupuzede.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a098a4a1afa---72349252895.pdfIn PDF document text
- http://rakkhunnursinghome.com/user_img/files/wibaruvemusijiro.pdfIn PDF document text
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092cc4541843---98529122103.pdfIn PDF document text
- https://serpavenger.com/ckfinder/userfiles/files/2442794531.pdfIn PDF document text
- http://unleadedcoffee.cz/soubory/fudasaxuravoponeluzin.pdfIn PDF document text
- http://papaicountrylodge-longstay.com/user_img/files/13509121342.pdfIn PDF document text
- http://akvari-um.ru/userfiles/file/tanebaxopokuxuw.pdfIn PDF document text
- https://najarshi.com/basefile/najarshicom/files/24469390312.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=leer+caballo+de+troya+6+pdfPDF 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_off0000be66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE66 | 18108 bytes |
SHA-256: a3a3a710da25ffa234ec5e83a670ae52c73e2986b0c899e5a7983b924434f2f2 |
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font_01_sfnt_off0000ec88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC88 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001049f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1049F | 10628 bytes |
SHA-256: b87e1c441e9d0857822c1b859d00e2b98394384cc7b2a3b018c965599d755a34 |
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