MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file contains embedded JavaScript and numerous external URLs, many of which point to PDF files. Heuristics indicate this is a link farm designed to redirect users, and a callback phishing lure is present. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to distribute further malware or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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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://krisoc.ru/uplcv?utm_term=marvel+avengers+academy+game+download PDF link annotation
- http://carnow.jp/js/upload/files/kotusuzetav.pdfIn PDF document text
- http://tyros-club.de/userfiles/file/duzojabawamivigenazawun.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161484d04af3a7---jomolotefagovekalumomoleg.pdfIn PDF document text
- http://ckudzcssffhhj.handysociality.com/upload/files/kuzinaxipekatafexabidejaf.pdfIn PDF document text
- http://retco.ge/ckfinder/userfiles/files/zudofiwidajenojo.pdfIn PDF document text
- http://2017.letnifestiwal.pl/ckfinder/userfiles/files/6032046718.pdfIn PDF document text
- http://tamker.hu/userfiles/file/wuzoritewazanabiwozozaw.pdfIn PDF document text
- https://sanipro.ma/app/webroot/uploaderfiles/78295631246.pdfIn PDF document text
- http://mientaytourist.com/uploads/files/fasadolenivawoxawofo.pdfIn PDF document text
- http://bordahusfeldolgozo.hu/editor_up/41601923173.pdfIn PDF document text
- https://tattica.byespresso.com/app/webroot/files/upload/files/86808789952.pdfIn PDF document text
- http://sarigol.kr/userData/ebizro_board/file/57591280061.pdfIn PDF document text
- http://mini-garden.ru/userfiles/file/vomumofewelipinepegim.pdfIn PDF document text
- http://fiumaradelsossio.it/userfiles/files/46951706595.pdfIn PDF document text
- https://meesens.be/KrMee/Tekstverwerker/4998570515.pdfIn PDF document text
- http://madiran-cruduparadis.fr/ckfinder/userfiles/files/laxetidemumumoxufuvako.pdfIn PDF document text
- http://moscow-vernisage.com/files/files/99828805052.pdfIn PDF document text
- https://terminal.hr/userfiles/file/77029361917.pdfIn PDF document text
- https://sluganarodu.org/userfiles/files/4539627282.pdfIn PDF document text
- https://dbmotorbrokers.com/userfiles/file/wowufudud.pdfIn PDF document text
- http://lovec.bg/root/ckfinder/userfiles/files/37943204689.pdfIn PDF document text
- https://turkeyinsurance.info/images/file/43016358956.pdfIn PDF document text
- https://10glazsikeyrosa.ru/file/gagikik.pdfIn PDF document text
- https://bbpartner.cz/userfiles/file/88502091729.pdfIn PDF document text
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614adc0fbfb0c---54932775504.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dd3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD3C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f54e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF54E | 17384 bytes |
SHA-256: 7b0c43e699310b1c18312611f757091152ffdfec65a36746e32fb6e2881ca653 |
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font_02_sfnt_off0001226a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1226A | 10780 bytes |
SHA-256: a180326b953c875b7e48097833cd3b98697bcab1dea00049b906f1d7531cf5be |
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