MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by ML classifiers and ClamAV as malicious, with a critical detection score. The heuristic analysis indicates it's a link farm PDF designed to host other malicious PDFs, and specifically mentions a callback phishing lure where the document prompts the user to call a phone number. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content or initiate a social engineering attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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 http://stl-hk.net/userfiles/susepogumurotozedawo.pdf In PDF document text
- http://adbrf.com/files/fckeditor/file/127831419613cc4d9a2911.pdfIn PDF document text
- http://mudrkanuch.sk/editor_uploads/system/files/luwakepovikavus.pdfIn PDF document text
- http://lagrupacio.cat/file/wipivebixilasatudub.pdfIn PDF document text
- http://daiichihousing.net/uploads/news_file/14595719350.pdfIn PDF document text
- http://axi-hohenstein.de/userfiles/file/94630871647.pdfIn PDF document text
- http://jvcc.cn/ckfinder/userfiles/files/21091516555182792235vgx.pdfIn PDF document text
- http://worldsocialistpartyindia.org/ckfinder/userfiles/files/batodevaregewow.pdfIn PDF document text
- https://cmoretv.com/userfiles/99599893267.pdfIn PDF document text
- http://sunnysolutions.it/uploads/assets/file/70082498419.pdfIn PDF document text
- https://underworldgear.com/upload/users/files/53516636979.pdfIn PDF document text
- http://kientrucsangtrong.com/plus/files/fowigurukonuzevenupi.pdfIn PDF document text
- https://pnp-studio.com/fckeditorfiles/file/wadezututigotugubeveluda.pdfIn PDF document text
- http://www.ktgroup.co.uk/ckfinder/userfiles/files/11654579249.pdfIn PDF document text
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132c14f9f3a6---juminosewolejobif.pdfIn PDF document text
- http://encino.ilovepokebar.com/uploads/files/bokokinijibitegemejuma.pdfIn PDF document text
- https://karinbentum.nl/uploads/file/fukudolefoxotojenapolopes.pdfIn PDF document text
- http://mingmitrcoffee.com/user_img/files/sivutid.pdfIn PDF document text
- http://devison-matras.com/upload/file/linogu.pdfIn PDF document text
- http://zlatartopalovic.rs/files/12713990069.pdfIn PDF document text
- http://meetburgerusa.com/uploads/files/83887001259.pdfIn PDF document text
- https://webornate.com/viking1/uploads/files/66698169458.pdfIn PDF document text
- http://skazka76.ru/pic/userfile/rasoma.pdfIn PDF document text
- http://studioguagnoni.it/userfiles/files/roxerinan.pdfIn PDF document text
- https://wanna-drive.nl/files/File/98749852305.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=c%2B%2B+11+14+17+20PDF link annotation
- 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_off0000ddb6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDB6 | 18592 bytes |
SHA-256: e36ba595e2e73d08a1b1691928e99392da881ea1733579587bd88d99b76549ef |
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font_01_sfnt_off00010d8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D8E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000125a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125A4 | 9532 bytes |
SHA-256: 1f97b8e9d7483c9d79a6b820497d1adbb827302f18973551f04853c26b399a9f |
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