MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites hosted on potentially disposable domains. The presence of external URIs and links to compromised CMS uploads suggests a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://coretry.ru/uplcv?utm_term=reaction+of+hcl+with+nh3
- http://nappsa.org/userfiles/file/tojekufugegazanivelixuruz.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b73b1e994cc---51070746571.pdf
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/05fe22c4b0fd3a09d70268ec658e6bdb/pulimonuf.pdf
- http://mikailang.net/userfiles/file/20210604155831_127446741.pdf
- https://sheenabusesandcoaches.com/userfiles/file/fiwafovijijedasu.pdf
- https://poolpoint.be/uploads/file/17867781521.pdf
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/9300a0e1fed84e0e3e72d6e59e0cfd45/newemagosafezutijif.pdf
- http://orgue-chantepie.info/FCKeditor/upload/file/15879352773.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/333410d40e9e234451e1e2589bb7f80a/89991915030.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e6d16c2da9380e1ea22855f4da28eb7f/99323515567.pdf
- https://warungmimpishio.com/contents//files/lidepinutalikanegik.pdf
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160bfac89ee2b5---pelufumo.pdf
- http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/dq1k3n8ckh5gpon8di3ackagb7/71877294675.pdf
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcbdd75064---wosagerexosus.pdf
- https://ihotel2b.com/upfiles/editor/files/jupivugefosewalam.pdf
- https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/add48e6a01f7b6588a5832f458d68296/jerijonomelovoxilobuboxek.pdf
- http://www.jindatunnel.com/up_files/file/57213063247.pdf
- http://painttechvina.com/webroot/img/files/94885970969.pdf
- http://tvoirostov.ru/ckfinder/userfiles/files/88581960793.pdf
- http://jhferry.com/data/fckeditor/file///vadorixiginexoxawopew.pdf
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/md0kksur629b7no52f7158de8l/raxikobajonumumeroz.pdf
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/e2add514dda6197936ae8208b8d23d26/69881637183.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_off0000e8e3.bin5fdfc723c73d20f35f73463834c5ed233259d6d597ca60a975cc2916d1fc8fdb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8E3 | 17384 bytes |
font_01_sfnt_off000116a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116A4 | 16792 bytes |
font_02_sfnt_off00012ebb.binc3d218f7f18f360b90cb0dee7ecaffef44dc0faae1fe43fdb3a33594eb0b67be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EBB | 10468 bytes |
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