MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF that functions as a link farm, directing users to numerous external URLs. Several of these URLs point to compromised WordPress installations, indicating a potential distribution mechanism for further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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://cowichanseniors.ca/userfiles/file/77386011073.pdf
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/5d8b105aa570e1d248dd739afebd502b/zojovow.pdf
- http://bioident.pl/photos_fck/file/kivitik.pdf
- https://sluganarodu.org/userfiles/files/dekigikodunituxasezisizeb.pdf
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/3af146f498bd06297c31167ee429ce65/govemizesegugidetubune.pdf
- https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/kumepubakonasawaxekazoju.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160abccf43b592---xonigijisilosufudi.pdf
- https://ises.ca/phpsites/vertical_living/uploads/file/relaxowuduxuluw.pdf
- https://taipeitccia.org/CKEdit/upload/files/badezopesotogof.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/jt678s4qid6fja2al4iq38gu1s/mikekekosexi.pdf
- http://galluccifaibano.com/userfiles/file/velobarudonumilim.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16082a8a3700d7---80953204905.pdf
- http://sushiloverca.com/uploads/files/34320673480.pdf
- http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070420e76ac6---51826776878.pdf
- http://adance0112.com/upfile/editor/file/pipatadavaza.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac25efd936f---55582203825.pdf
- http://elateridae.com/images/FCKeditor/file/94516332052.pdf
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608be68539b55---lagiwelobojetula.pdf
- https://infrastone.com/userfiles/files/puxuxabulogilosowe.pdf
- https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608574f34aacf---58250936069.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/6d3b3e0bb61ea455c9edc78b09f459e1/netinibewokimubipejo.pdf
- http://zaun-produzent.de/userfiles/file/momobimemil.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=a+snake+with+2+heads
- 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_off0000e116.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE116 | 16792 bytes |
font_01_sfnt_off0000f928.bina0ca7ba7a9f22b2144e4e7420e6c7f320a71c11d210a94699d24c2162db3cc45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF928 | 17692 bytes |
font_02_sfnt_off000126f9.binff9b5f55bf278e2d9be85ef59d78ac2a8067ecb6b5448d5e1dd4dc64d58be483 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126F9 | 10360 bytes |
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