MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. ClamAV and ML classifiers identified this file as malicious, specifically a phishing trojan. The presence of external URIs and compromised CMS upload links suggests an attempt to host malicious files or redirect to phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 7
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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 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://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f14695fb17---zimokuxusojalekolex.pdf
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca6a07ea07---milekelatipinojude.pdf
- http://nhs1980alumni.com/clients/878257/File/39278007479.pdf
- http://zonweringnederland.com/ckfinder/userfiles/files/pidolodu.pdf
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/cd74e5655d8279a79771053db962344e/23132602751.pdf
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d01b5b0a4ad---39985297589.pdf
- http://vladjurnalist.ru/archive/file/6834559144.pdf
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609446f88f131---52608671362.pdf
- https://asiabiru.com/contents//files/likesasi.pdf
- http://speaklifeiamgreatness.com/files/files/jamulepigesureluzopisej.pdf
- https://batikatravels.com/userfiles/file/81633172561.pdf
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bab4557fc---tolubifuv.pdf
- http://bsinteriordesigner.com/userfiles/files/25838467526.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/1i40rnkulnd7c5a4993vdi1135/20785931351.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/56e24648557494a91c206e24eb722123/jatonelow.pdf
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608952deaa24b---puzonurexi.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792e587b7e3---36379478595.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/8ab78e9acde553cfc5158ce9ad551771/fazemafekumazi.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c49b5e4f4b---fifet.pdf
- http://lnianemarzenie.pl/userfiles/file/tugugudasu.pdf
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa168c74e11---garosowogexujite.pdf
- https://iiml-pgpsm.in/ckfinder/uploads/userfiles/files/65077510423.pdf
- https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/5ab30e3014e816df2448bcaa9846e7a5/89486472921.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/es4ql8j257lklhki1cofhbprgh/zukujixav.pdf
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/733a87a4dfbc7dd56c61f72b14466bd5/81318441717.pdf
- http://champagne-marc-chauvet.com/images/files/64923390457.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=really+bad+indigestion+pain
- 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_off0000fa7b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA7B | 16792 bytes |
font_01_sfnt_off00011292.bin47fe2fafd5619d6e51529fb111709edf6a9bd8cfc3bc34677b316af5058d517b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11292 | 10768 bytes |
font_02_sfnt_off00012b07.binace0e55bfb63ce09c654fe793c3b3917189c5bc6e3b2def5be202377a951e04d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B07 | 17592 bytes |
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