MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, as these are common tactics for distributing malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106b6839f373---59012145139.pdf
- https://108pizza.pl/uploads/userfiles/files/papiv.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9627d20d1---punedajaxutumebadodisiri.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/6c186e069cf3140ef9f6e64cb93b51cf/mesosesaxa.pdf
- http://flightshop.jp/images/blog//file/16685706977.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608019920b3ff---luwadazirafinoxilezirowew.pdf
- http://ascensionchina.com/userfiles/file/tozamuzavaruxapupo.pdf
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b0d13625a---dumonosuzisabafakido.pdf
- http://trustarshida.co/cache/fck_files/file/19594040362.pdf
- http://filatelianumismaticaumbra.it/userfiles/file/rukiluduxufuwurulebopu.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/cf464e5789f593afc9ec926ed152e126/demijan.pdf
- http://emirates-offshore.com/uploads/image/file/mavodeleso.pdf
- https://binarbaidfabrication.com/public_html/userfiles/file/98478101904.pdf
- https://angelsstaff.com/uploads/file/19788526159.pdf
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae31f80a22---77146118485.pdf
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/38e427fd382f50a26a3aa13d1eeb1c16/zegukikuxodoja.pdf
- http://luatsutiengtrung.com/app/webroot/uploads/files/vovazasuvivusuxuk.pdf
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/47e1ls2ngr2o5ao069gtuthfta/1560552678.pdf
- http://www.sport-konyv.hu/userfiles/file/91620367179.pdf
- http://gyorszol.hu/userfiles/file/sumugetizowubutamizaba.pdf
- https://airshow-bg.com/file/30245454590.pdf
- http://alpanelektrik.com/depo/sayfaresim/file/40823480246.pdf
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb99e96bb0---sarikito.pdf
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b525ff8a5a6---28274346885.pdf
- http://riggi.ru/userfiles/file/vumam.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=how+is+thread+depth+calculated
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e233.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE233 | 16792 bytes |
font_01_sfnt_off0000fa45.bin5210c8337884a703f43ff95d8a3ddf0ef4834ad211acedee2b7b75e56fc6c326 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA45 | 17980 bytes |
font_02_sfnt_off00012a2c.bina4a807834db2d5c893929e3fe8ddae399dd47df5538df73ebe8e4ded945475de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A2C | 10684 bytes |
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