MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV detection. It impersonates a document signing service and contains numerous links to potentially compromised websites, suggesting a phishing or malware distribution lure. The presence of multiple PDF link farm heuristics indicates an attempt to obscure the final malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Document signing service impersonation lure medium SE_DOCUSIGN_LUREDocument impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://www.aqsclimited.com/EditorImages/file/dojafegabewukizemefi.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16070be073da85---26711289366.pdf
- http://okna-stv.ru/userfiles/files/naluwukotibimeduxomikik.pdf
- https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/a06d089260331a32eb1e786ba817f891/10758462992.pdf
- http://ligneus.hu/upload/file/42275066504.pdf
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8276d1ec0---lazenerezor.pdf
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607199d0a475b---73247467881.pdf
- https://alihuata.com/userfiles/file/dusoweta.pdf
- http://e-kva.ru/admin/ckfinder/userfiles/files/12230367017.pdf
- http://china-miyaco.com/img/file/2021621232930.pdf
- http://kimbuunguyen.com/uploads/userfiles/file/xezakonipiruxodenuduf.pdf
- http://gemculture.com/userfiles/file/19760285336.pdf
- http://afghansolar.com/userfiles/file/suvope.pdf
- http://nissanotogovap.net/uploads/images/files/36684880039.pdf
- https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/t91kv3bb2l24m6ad4vukfr1573/nupufanez.pdf
- http://www.allatpatikapecs.hu/images/file/39569870394.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/49b0f15069e089510eba260c3912d311/lemipipum.pdf
- http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608530c4b49d0---50908411109.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/a0430d6f58f6be7e00f5c9f1fb803064/tufepadobokojirezo.pdf
- https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/72c4fa6f2e8878c737980a3e939d1e74/zubub.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/a68e660d6e302dfa046e65c221190b7e/jewezaxenubomijopus.pdf
- https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/b84be8445693d322170a18add5599467/90938596848.pdf
- http://klubalfa.org/img/userfiles/file/kaxefakid.pdf
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/kvf8u1o29fdl3lvh14a18c0gf5/gonurowopafopuboluwokosug.pdf
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/o42dit8ne7lhos3bi0j9mcimi3/pates.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+paste+signature+on+pdf+file
- 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_off0000e7d7.bin2348c5b4d38de505408d7ba6cbd13ef22455bfdc0466c09ee83def20cc1743d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7D7 | 16888 bytes |
font_01_sfnt_off000113f6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113F6 | 16792 bytes |
font_02_sfnt_off00012c0d.bin44ee8998ace10b9e79fef9a25ef8b4eb3d107a6158a4528c6fe74cfcc1e5463f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C0D | 10852 bytes |
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