MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by ML classifiers and ClamAV as malicious, with high-confidence heuristics indicating it presents a fake CAPTCHA or human verification prompt to trick users. It also contains numerous external URLs, some pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the overall pattern suggests an attempt to lure the user into executing further malicious code.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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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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://catamma.ru/uplcv?utm_term=lucky+patcher+free+apk PDF link annotation
- https://www.willmarareachamber.com/ckfinder/userfiles/files/78024342531.pdfIn PDF document text
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16141182245863---pukapuramipuvo.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16141983c29c4c---raxukosutaju.pdfIn PDF document text
- https://momentous-inst.com/uploads/image/files/33674024774.pdfIn PDF document text
- http://anninh247.info/upload/files/10017396698.pdfIn PDF document text
- http://alde-pace.org/ckfinder/userfiles/files/vizesoruwukalupanuvofu.pdfIn PDF document text
- http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131a8255c8d6---rubam.pdfIn PDF document text
- https://groupunsur2.com/contents/files/godipisosotajejonaju.pdfIn PDF document text
- https://kawanmto.com/contents/files/70438852764.pdfIn PDF document text
- http://streathamtaxi.com/survey/userfiles/files/togunatakimus.pdfIn PDF document text
- http://lindendirect.com/tempimg/file/62076916295.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/ceaffc84a252e553b08f1e6a371aed7c/zomuxanajokijaxoxusizefol.pdfIn PDF document text
- http://kiko168.com/UploadFile/file/20210904052026354.pdfIn PDF document text
- https://clubelsendero.com/img_pag/file/zinewanofitojewofidobedil.pdfIn PDF document text
- http://ahkjt.com/upfile/file/3696841974.pdfIn PDF document text
- http://w-mill.jp/images/file/vowoxasegexizer.pdfIn PDF document text
- http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/7777933386.pdfIn PDF document text
- https://hoalavender.net/upload/files/1670661479.pdfIn PDF document text
- http://yurisolomko.com/userfiles/file/zunikurez.pdfIn PDF document text
- https://asztromiskolc.hu/ckfinder/userfiles/files/zopitekerisolufujo.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/57970086050.pdfIn PDF document text
- http://zovsh.com/Uploadfiles/files/76623549649.pdfIn PDF document text
- http://www.peritaonline.es/ckfinder/userfiles/files/xigagubajifesi.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614593f1b807b---tezarufobozusoponafifomuk.pdfIn PDF document text
- http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/wupej.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_off0000fbf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBF8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001140a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1140A | 18052 bytes |
SHA-256: 7554c9c00e4a13cd4e232fa2b9526d6ae20a953355ec0e586fe8036e4ae1e570 |
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font_02_sfnt_off00014245.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14245 | 10312 bytes |
SHA-256: a7e9b97ae9b8c936a3e6fb44d52a947e24cad273c25442a450e642d932e6e220 |
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