MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and multiple external URLs, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The presence of a 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic and a 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristic further supports this. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 8
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://catamma.ru/uplcv?utm_term=how+to+read+html+file+from+assets+folder+in+android
- http://bjerkelunden.org/content/files/userfiles/file///ribezetabozewoxud.pdf
- http://sumisaedu.com/FileData/ckfinder/files/20210908_356B1B1BA8D6A5F0.pdf
- https://albertoangel.sinecsas.com/ckfinder/userfiles/files/rimit.pdf
- http://jmk.kr/ckfinder/userfiles/files/rovowaveselu.pdf
- http://cukorbetegshop.hu/files/95224191825.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161428860ddfc1---86076350608.pdf
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/5d89b2e8937f8f7f5a710e73ff75f9b3/gefisanaja.pdf
- http://myhomeinparis.com/userfiles/files/5544044892.pdf
- http://montoaneli.com/ckfinder/files/zurujemamiza.pdf
- https://pharmawell.eu/ckfinder/userfiles/files/xuritibemorufovifu.pdf
- https://smshealthcareservices.com/ckfinder/userfiles/files/12249107344.pdf
- http://aa-nusd.jp/ritekebowixisom.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/29443204284.pdf
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613960431a4b0---33041560058.pdf
- http://nanchang.chinatupai.com/web/js/ckfinder/userfiles/files/88840123560.pdf
- http://kasaitogo.com/uploads/files/lifinilavubinavopofajot.pdf
- https://www.prieur-equipement.com/ckfinder/userfiles/files/wuvugemufimisanegodexo.pdf
- http://seasonmediagroup.com/pic/file/73376475422.pdf
- http://alcantara.cz/data/file/wemakapov.pdf
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/gg03gv3g2a12pqnj0qe2c30uup/zozupogowavafuxor.pdf
- http://designerhouse.ru/upload/files/baniga.pdf
- https://100tmt.com/uploadimage/files/20210901164938.pdf
- https://peoplesmodelinternational.com/ckfinder/userfiles/files/38417973951.pdf
- https://aadharshilaschool.org/userfiles/file/80356304264.pdf
- https://rtquery.reitoken.org/Coaching123/images/files/41687783301.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_off0000d571.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD571 | 16792 bytes |
font_01_sfnt_off0000ed83.bin0e7e62cd09285310e4d2a2416d808710600b56ce4e0364e1c20186445eb4dc79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED83 | 17748 bytes |
font_02_sfnt_off00011bc8.bin95675a668eefb02c5dba1f3e2b2532657d96f882f059ac14aad907df7f15d80b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BC8 | 10696 bytes |
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