MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and is identified as a phishing lure due to its small size and image-only content, typical of a screenshot designed to hide clickable links. The document body is heavily obfuscated, but the presence of numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, strongly suggests a phishing or malware distribution attempt. The ClamAV detection further supports its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.5307
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 62 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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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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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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://gzcil.com/uploadfile/files/vajesutikabudo.pdf In PDF document text
- http://lycee-elm.info/userfiles/file/46927713147.pdfIn PDF document text
- https://fzclicks.com/demo/files/editor/file/kojejerafewegizu.pdfIn PDF document text
- https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613a28a78d7e8---30163527290.pdfIn PDF document text
- https://lotteppta.com/beta/assets/file/zozamafobugi.pdfIn PDF document text
- https://memorybg.net/app/templates/js/ckfinder/userfiles/files/komefadudalawirukobi.pdfIn PDF document text
- http://cbcom.eu/ressource/site-image/files/92237763845.pdfIn PDF document text
- http://eg-connect.com/uploads/editorfiles/file///24920376869.pdfIn PDF document text
- http://bavlas.lt/ckfinder/userfiles/files/fusozukaf.pdfIn PDF document text
- http://soupworld.de/upload/file/83604018776.pdfIn PDF document text
- http://hzzxtl.com/UploadFile/file/20210916022835804.pdfIn PDF document text
- https://alteanetworks.fr/img/file/35122790664.pdfIn PDF document text
- http://infosierra.es/images/editor/zirukibu.pdfIn PDF document text
- http://ndt-ultratech.com/files/52031269040.pdfIn PDF document text
- https://dalycity.com/wysiwygfiles/file/zumugun.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/feb809b48a17b851ae3ec2605a61a837/92529772752.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/d772a889f91be20fc30b07a5cdb34661/20047801378.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/80013027721.pdfIn PDF document text
- http://massimosusto.eu/userfiles/files/kutezit.pdfIn PDF document text
- https://bestcaps99.com/ckfinder/userfiles/files/wewulasufafadigi.pdfIn PDF document text
- http://cnsgafgl.netsociality.com/upload/files/sezegabikit.pdfIn PDF document text
- http://condominiobrisasdelnorte.com/userfiles/file/soxamexak.pdfIn PDF document text
- http://melly-incendie.fr/img_db/48051999468.pdfIn PDF document text
- http://xn--d1achljw0b.xn--p1ai/content/upload/tupexejutesa.pdfIn PDF document text
- http://liderzy.natura2000.pl/imgturysta/files/2857191930.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=greatwall99+apk+download+for+androidPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b277.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB277 | 10708 bytes |
SHA-256: 23684904d91e61aad3e6c21b641fd91252dae6d8426dfa8e0d91a5486e520ad7 |
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font_01_sfnt_off0000cb3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB3D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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