MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a callback phishing or tech-support scam. The presence of embedded JavaScript suggests an attempt to exploit vulnerabilities or execute malicious code. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the heuristics strongly indicate a phishing or scam attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9938
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://smartech.lv/sites/smartech/uploads/documents/files/3673043777.pdf In PDF document text
- http://portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/82522403186.pdfIn PDF document text
- http://srividyaastrology.com/userfiles/file/sopigojeg.pdfIn PDF document text
- https://iva-vietnam.com/userfiles/file/jotagese.pdfIn PDF document text
- http://master-br.ru/img/file/sesuxonud.pdfIn PDF document text
- http://chongqinghaohong.com/upload/files/41940566837.pdfIn PDF document text
- https://maciejabramowicz.pl/upload/files/file/konujesavilowawosanazuzul.pdfIn PDF document text
- https://armature.ir/cache/fck_files/file/14507649692.pdfIn PDF document text
- http://baaningdoi.com/file_media/file_image/file/36867520919.pdfIn PDF document text
- http://kisito.com/userfiles/file/faxur.pdfIn PDF document text
- http://gewoongroen.eu/app/webroot/files/userfiles/files/papumajanu.pdfIn PDF document text
- http://giustizianuova.it/userfiles/file/24474556082.pdfIn PDF document text
- https://nergizleryapi.com/image/files/mawuvuxexoruturedunuf.pdfIn PDF document text
- https://yennenga.org/business_school/uploads/file/83694763117.pdfIn PDF document text
- https://capitalsyndic.com/userfiles/file/vivop.pdfIn PDF document text
- http://hotelrefah4ter.ir/basefile/hotelrefah4terir/files/7036409012.pdfIn PDF document text
- http://cokhilegia.com/upload/files/wenef.pdfIn PDF document text
- https://sadhankendra.org/erc/media/35418409944.pdfIn PDF document text
- http://wwsm-hk.com/files/file/gulepadesofum.pdfIn PDF document text
- http://terhautz.com/upload_files/files/gimejiri.pdfIn PDF document text
- https://perfumes.dropship-tracking.com/userfiles/files/85286878323.pdfIn PDF document text
- http://sskj.pl/userfiles/file/jujawijubosufukabu.pdfIn PDF document text
- http://think6.net/ckfinder/userfiles/files/20210912230427.pdfIn PDF document text
- http://boonfagrandhome.com/user_img/files/bubope.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=house+of+leaves+book+pagesPDF 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_off00012235.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12235 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00013a47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A47 | 21144 bytes |
SHA-256: b5aa351e9a67b95dcaa027f33da315e00288199d91d3d3c19afaa273dee21474 |
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font_02_sfnt_off000171bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x171BC | 10528 bytes |
SHA-256: 64d34368b9b1a425df6d6846cc742dc3fc8d552cb9d485a3e9424dea1bc07d6d |
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