MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains numerous embedded URLs that point to compromised websites and disposable domains, indicating a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure as a link farm, combined with the use of compromised CMS uploads, points towards an attempt to lure users to malicious content.
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://krisoc.ru/uplcv?utm_term=linie+1+b1%2B%2Fb2+pdf
- http://tweddlefoto.com/files_contenidos/upload/files/49368594762.pdf
- https://anpheatingandac.com/nbloom/fckuploads/file/fuxusixijinawunin.pdf
- http://radio6deenero.com/uploaded/files/mazibemumasoxav.pdf
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc27e0ca2---6166744623.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/fcfe270488a18dbc4d61222d94a77dbd/33566176236.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607336f2e59e8---19261920661.pdf
- http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3730211c3---tovozuwunoko.pdf
- http://animationcoach.com/userfiles/file/28763967039.pdf
- https://gaziemirkentkonseyi.com/upload/files/55271471913.pdf
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e0248e804---poxagasugixuvebimufif.pdf
- http://ferrocom-spb.ru/userfiles/files/3987384722.pdf
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/a7c3hh1prf8cl9bbdrv6urfmsd/birepazabi.pdf
- http://www.pics4us.de/userfiles/file/53741947252.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f075dab25---26459916568.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4c151f77d---65885959299.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c7afe1f7c---52175006579.pdf
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac544ae4df8---sopejavevifoziwi.pdf
- https://tl-systems.hu/files/files/73877801828.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/88445246309.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/g0dciuioeibn4jlsu05qq7knq5/19128287935.pdf
- http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868ddeda1be---83841528638.pdf
- http://i-harmonics.com/upload/files/46835365140.pdf
- https://adasms.fr/userfiles/file/rigirilitosiroruzeduwege.pdf
- https://bandai-k.com/userfiles/file/pubavuribixopagopufuveni.pdf
- 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_off0000d34f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD34F | 16792 bytes |
font_01_sfnt_off0000eb66.bin53c2ffae586be3867b4fda10ec7c7d2cef33f70ca26bfa6fdf6026a187eb582a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB66 | 10100 bytes |
font_02_sfnt_off000101d8.binf9311b70d33f69a4a604e4a6969b963b22b0bf327b945530d5f554bb8415663c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101D8 | 22632 bytes |
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