MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, indicating a phishing or scam attempt. The presence of embedded JavaScript and the document's structure as an image-only lure with a clickable action strongly suggest it is designed to redirect users to malicious URLs. The document body is heavily obfuscated, but the heuristics point to a callback phishing lure, asking users to call a number in a context of billing or fraud.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 8
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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 0 text block(s), carries a click-outward action, and is only 67 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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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=the+doorbell+rang+pdf PDF link annotation
- https://spyboarcams.com/files/tosed.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2c89d538f---2744738074.pdfIn PDF document text
- http://aranysolyomfeszke.hu/editor_up/mejowisumeketol.pdfIn PDF document text
- http://addisonplaza.abwingsmd.com/uploads/files/timejibe.pdfIn PDF document text
- http://letnipohar.cz/upload/file/18025534140.pdfIn PDF document text
- http://veewood.com/file_media/file_image/file/75094873389.pdfIn PDF document text
- https://officialbacknumber.com/editor_up/49685966089.pdfIn PDF document text
- http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/91119665885.pdfIn PDF document text
- http://tianlanip.com/filespath/files/20210918072841.pdfIn PDF document text
- http://huarong-bio.com/upload/files/75132469481.pdfIn PDF document text
- http://cjmfgxfollow.morefriendship.com/upload/files/7930312256.pdfIn PDF document text
- http://stalmont.eu/userfiles/file/dobiximunepaxivupobarudek.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143558a8049b---31248116479.pdfIn PDF document text
- http://generoussecurity.com/uploads/nevabuw.pdfIn PDF document text
- http://surveycook.com/upload/tmp/202109/file/tunuziwuvewofazit.pdfIn PDF document text
- http://optimaglobal.net/ckupload/files/84032429242.pdfIn PDF document text
- http://sumosushingrill.com/uploads/files/96571309860.pdfIn PDF document text
- https://edgecs.com/documents/80827151195.pdfIn PDF document text
- http://skisun.it/userfiles/files/89547702478.pdfIn PDF document text
- http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/xifupupekapujuregovipewaj.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_off0000ad41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD41 | 13848 bytes |
SHA-256: 03d0e1d142d11ef6fa22e606219b599280466179f7c0d403412524032ecba959 |
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font_01_sfnt_off0000cfbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFBF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e7d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7D6 | 10520 bytes |
SHA-256: 3e20a3cf23f67ac1a3074d2251f2bf9186e83455633fe8d1dd9243223453e859 |
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