MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and a lure for remote support tools, suggesting an attempt to trick the user into installing potentially malicious software. The embedded URLs point to compromised CMS uploads and disposable hosting, further supporting a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9848
Heuristics 7
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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://pronobile.de/catalog/file/52955881717.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090998bb1674---punaludigana.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160764a34361fe---10010532607.pdf
- https://tahitotfaluovodak.hu/ckfinder/userfiles/files/sirufemi.pdf
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a25f58e2d2f---bogukixal.pdf
- https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/c05d428af55494652df937b08a3170cc/verukapupafuku.pdf
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/078654810b7b0d8fc03bda1958fcdb9e/6899995403.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/1t0av6rckdkjod255j99ng6erb/kofetomufepekuzuzu.pdf
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607474cbd3078---85804984382.pdf
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/2ccd6npv827mldeiti18dl50j0/35940514291.pdf
- https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606d35f23d2c9---sagit.pdf
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/ojntojm8u07nahbc7jr3pkh7kj/48693909218.pdf
- http://bertrandetgastineaudesigners.com/userfiles/file/semaz.pdf
- http://aqbnb.com/uploadfile/file/78090698890.pdf
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/3355a80fde2860f0e2ce22c5d916d149/92405103285.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/f4q0o3gg1h3kbtnfqm01vru8j1/31357022073.pdf
- http://mousike.it/img_ins/files/zekaxelomikixu.pdf
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/60bc886496bc325d0f16a10b1123e16a/wafisugisasawisiregovajez.pdf
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/2fmoj6p8l9a4i87i0kjqeqv5c7/25057054033.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff80ddb2bb---vogijunasuzifowisalobux.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7222489f9---1094186761.pdf
- http://stylekd.ru/files/sagewusosox.pdf
- http://aimic.com/userfiles/file/fagilapavutifixavo.pdf
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/4br0u4llsv5qqn0vfnt3rigssl/setebujejodezubifudiwe.pdf
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606e5291e37e0---suniwalodav.pdf
- http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/15459715738.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=common+polymers+and+their+monomers
- 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_off0000ee9e.bin438fafdf436e082120cd668785e55eb4e43ed0223374ff3508a5c4e69e1da5a9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE9E | 16560 bytes |
font_01_sfnt_off000119de.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119DE | 16792 bytes |
font_02_sfnt_off000131f5.bin853e5ebf446c20546d472645be9b9b3fca99bfaea2afc3b807f6cbae4e20663f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131F5 | 10800 bytes |
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