MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document exhibits characteristics of a callback phishing scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains embedded JavaScript, suggesting an attempt to execute malicious code or redirect the user. The presence of numerous URLs, many pointing to compromised CMS uploads and disposable hosting, further supports a malicious intent, likely to host phishing pages 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://ketchas.ru/uplcv?utm_term=at+your+request+android+is+blocking+this+category+of+notifications
- http://henghuitong.com/jingkelun/userfiles/files/20210908024604.pdf
- http://cissi.it/userfiles/files/79984691388.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/rmtukosf039nld1ti29860ofri/gokorubiguxokafitixelaxe.pdf
- http://kanomax-nsk.ru/images/vozepo.pdf
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/rve4bfhdl7mfkmv7pp69a9qkc6/30527519336.pdf
- http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/63361806853.pdf
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/6e0b4181393a7baac98c29764e26bfc2/963271156.pdf
- http://lyzebrno.cz/userfiles/file/rurepasatovetomusivi.pdf
- http://www.leposeur.fr/site/upload/ckfinder/files/sefuja.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613187f059b11---gasumetafenefabose.pdf
- http://thrifthelp.com/flash/thrifthelp.com/file/47536218906.pdf
- http://quangcaosmsgiare.com/media/ftp/file/fipajoja.pdf
- http://canadianrockies.ca/files/file/pivenesaxaj.pdf
- https://xylemleads.com/userfiles/file/51023976915.pdf
- https://wrd13.com/force/file/64752572163.pdf
- http://gshosnab.ru/userfiles/file/28862007874.pdf
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16138b3c6b97a6---wumaxojefakuvezer.pdf
- http://brucemayrockinstitute.com/assets/ckfinder/core/connector/php/uploads/files/bakivaso.pdf
- https://matras-matrasych96.ru/admin/ckfinder/userfiles/files/zapavaweke.pdf
- http://kxqcgs.net/filespath/files/20210908090531.pdf
- http://karinameal.com/imgdish/files/zefotex.pdf
- https://kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/tuzavadi.pdf
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/f222d19f299845a64bc66b5188f79461/luwogapamikigebojigeso.pdf
- https://myparrotfood.com/user_files/files/toponekugor.pdf
- https://seo-methodes.com/userfiles/file/pusorikiramutile.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_off0000cf9a.bin0737c252199ee2f894c62afa91304e63f96bec7d3317ccde9ae8a2d2370cfad2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF9A | 17376 bytes |
font_01_sfnt_off0000fc3f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC3F | 16792 bytes |
font_02_sfnt_off00011456.bin42e55ff0e0ced779b9c71c466ecd3c7dd73874691c9783a7d37adb5bdd4de18a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11456 | 11328 bytes |
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