MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and ML classifiers. It contains a large number of embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of external URIs and random-looking URLs indicates an attempt to redirect the user to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://synerhu.ru/uplcv?utm_term=examples+of+performance+appraisal+forms
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cc2f8f6619c6453d74152cdbf9e79af6/nafunejoxi.pdf
- https://healthmatters.me/userfiles/file/92045447282.pdf
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b29ad14540---90669122492.pdf
- https://schlosshotel-murten.ch/userfiles/files/kozatujonexuripufen.pdf
- http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071dee205732---52077207813.pdf
- http://antwerp-reefer-tournament.be/argt/files/47521083409.pdf
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b38c8c6ed1---jolugafosukabulo.pdf
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983ddf903b2---tixelamosovirefepelof.pdf
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737fb8ca3dc---zulawulokusosuzipe.pdf
- https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/9f43e29181c729ce48d7bc9356a921f1/pelugulonozoxogu.pdf
- https://2acontractor.it/images/file/38044246255.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160dce8e131f9f---29812695584.pdf
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e112b6d9e---ditisegixitidorazil.pdf
- https://strechybenesov.cz/content/buvijubajojubefuxigomof.pdf
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfe683a8fc---majemoluzisi.pdf
- http://teacherandtraining.com/coj_u/KK/userfiles/files/85624694729.pdf
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab41ab0511e---kudeboti.pdf
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/vu9rl82159snpn94jnpp4ftktj/89286836075.pdf
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/9424f65af2a62a30108c6d326d2f3798/dibajitomesisesop.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/60ca4049caf9613e6e71c9ffeeb55b04/5928093595.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/cbaf21b318315ac8e141917a325d1e4b/popurisiw.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/03b46232d258052f08338743d9e62579/fojirelikezobug.pdf
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bce2d84e1c0---sijimobonota.pdf
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/nampbus6sb3ulhlt7312fatjpb/94271921199.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_off0000f0de.binb731bd54f1d5614d5150839d47033c75fc3874fb4907aeeeb597b32a4c77c600 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0DE | 10628 bytes |
font_01_sfnt_off00010921.binfbc6a39ce29f189fe1754eed1d76e42559fe2792a94e0047af0b73e920b33f1a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10921 | 17004 bytes |
font_02_sfnt_off00013537.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13537 | 16792 bytes |
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