MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The presence of embedded JavaScript and a large number of external URLs, many pointing to disposable domains or potentially compromised sites, strongly suggests a phishing or malware distribution campaign. The document body is heavily obfuscated and appears to be non-readable content, further supporting a malicious intent rather than legitimate document delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9927
Heuristics 6
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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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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://crewmak.ru/uplcv?utm_term=caused+by+java+lang+nullpointerexception+in+android PDF link annotation
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/ee13d51c7b50990313d4916f658a67b0/26867660499.pdfIn PDF document text
- http://burelomdo.com/ckfinder/userfiles/files/pefasev.pdfIn PDF document text
- http://skkl.cn/filespath/files/20210917123704.pdfIn PDF document text
- http://geojeoceanhotel.com/userfiles/file/20210914113424.pdfIn PDF document text
- http://soluzionebenessere.eu/userfiles/files/lilukidalafizasekumo.pdfIn PDF document text
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/f9g71586nv1uihlbuq8bi5eg4n/3959360932.pdfIn PDF document text
- http://myxroad.net/upload/userfiles/file///tugexor.pdfIn PDF document text
- http://seidels-mineralienwelt.de/images/uploaded/file/66510004428.pdfIn PDF document text
- http://all-vehicle.net/js/upload/files/47596305382.pdfIn PDF document text
- http://www.lbtfilm.com/uploads/files/xozuxuf.pdfIn PDF document text
- https://cargobull.cz/res/file/pakepanudusanogironinewa.pdfIn PDF document text
- http://dayuntang.com/assets/uploads/ckedit/files/20210913092046.pdfIn PDF document text
- https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/12364727408.pdfIn PDF document text
- http://vandientuchinhhang.com/upload/files/puviximizavote.pdfIn PDF document text
- http://worldplastsolution.com/ckfinder/userfiles/files/juzuwawovur.pdfIn PDF document text
- http://ebd.su/UFD/7623/files/15611471108.pdfIn PDF document text
- http://almar-bus.pl/userfiles/file/wapipasozamemubasig.pdfIn PDF document text
- http://patrick-jardinage.fr/ckfinder/userfiles/files/kabugulupugorodujuxa.pdfIn PDF document text
- http://zeci.nl/im/image/92220533180.pdfIn PDF document text
- http://willbramephotography.com/97890963587.pdfIn PDF document text
- http://jarauwerdaenzn.nl/userfiles/file/pizuvofuwi.pdfIn PDF document text
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/dalugi.pdfIn PDF document text
- http://kzlo.pl/fotki/fotki/file/nezorivuvetarabogizi.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_off0000ae00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE00 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c611.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC611 | 16284 bytes |
SHA-256: 5ba10fc9be211ff4c2c9590eb88ab9ad0a9cd021f9f8acba9a4d8ad4907cfeb7 |
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font_02_sfnt_off0000dc3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC3B | 11372 bytes |
SHA-256: 467d014e9a09ae55776fdb5daa0359a93eddb8fba6b82a206b44b54b43b5748b |
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font_03_sfnt_off0000f6bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6BF | 15568 bytes |
SHA-256: 21a7b6b1ab91565f5245faf762d939b6eb0662313c1a8a889d71aefd854d9c4b |
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