MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external URIs pointing to a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The 'SE_CALLBACK_LURE' heuristic suggests a callback phishing or tech-support scam pretext, further supporting the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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=fb+lite+link+download PDF link annotation
- http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/labosodaruxeta.pdfIn PDF document text
- http://metzlerranch.com/userimages/lijupijavosononufasogupa.pdfIn PDF document text
- http://builderall.info/userfiles/file/vobave.pdfIn PDF document text
- http://satyavnetworks.com/fck_upload_images/file/rewijosasefijuxema.pdfIn PDF document text
- http://kxnjl.com/userfiles/files/88655297483.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400ea8a6ee7---neditozilalazinikazowepa.pdfIn PDF document text
- http://paradisetourkorea.com/FileData/ckfinder/files/20210911_C43CF46B5917F9F3.pdfIn PDF document text
- https://www.burnat-provins.ch/ck/ckfinder/userfiles/files/11618019092.pdfIn PDF document text
- http://mousike.it/img_ins/files/bigesuroxi.pdfIn PDF document text
- https://imaggu.com/ci/userfiles/files/xagojebideruwoneko.pdfIn PDF document text
- http://consorzio-csa.it/userfiles/files/xuzorof.pdfIn PDF document text
- http://kargo-box.com/uploads/files/76491703193.pdfIn PDF document text
- https://online-wums.com/files/files/42210548041.pdfIn PDF document text
- http://373113.linker.tw/files/63716756885.pdfIn PDF document text
- http://zjgyuanhong.com/v15/Upload/file/20219131731214361.pdfIn PDF document text
- http://markaz-e-durood.com/EditorImages/file/49624891629.pdfIn PDF document text
- http://kibbkw.com/uploads/files/jejitezop.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/9ad9f52c21420845a116bebc183a52e1/6607622553.pdfIn PDF document text
- https://northcoteplaza.com/userfiles/file/dotemovesuzuxukigogibivul.pdfIn PDF document text
- https://zagi.hr/files/77259726076.pdfIn PDF document text
- http://www.eurosecurimed.com/ckfinder/userfiles/files/63575141092.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e8c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8C4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000100db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100DB | 10268 bytes |
SHA-256: 85dafa3a40c62790ec21d3c44b9a5ae511b30ab6a14dbe262d56334161c69216 |
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font_02_sfnt_off00011810.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11810 | 16704 bytes |
SHA-256: 2b4fee0384b0a120638eee0632799ddb61b822df168005f23acc8e01c966f7b9 |
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font_03_sfnt_off00012fd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FD1 | 26352 bytes |
SHA-256: 78d5a283cc5b090117aef524c464a61422d304fadd0b52dbc5b75ff042c0a6a7 |
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