MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains a high number of external links, many pointing to disposable domains, suggesting a link farm or phishing lure. One high-severity heuristic specifically identified a PDF link to an algorithmically-generated URL, indicating a likely attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://infrive.ru/uplcv?utm_term=free+conference+call+app+apk PDF link annotation
- http://vipdiler.ru/files/file/10139643086.pdfIn PDF document text
- http://koreaseowon.com/ckupload/files/86569340961.pdfIn PDF document text
- http://signauction.net/userfiles/file/78879563914.pdfIn PDF document text
- https://keluargamimpi.com/contents/files/nafudalisemokoduzakosik.pdfIn PDF document text
- https://autopsrus.com/ckfinder/userfiles/files/37448659807.pdfIn PDF document text
- http://falcon.dk/sites/default/files/webfm/papixi.pdfIn PDF document text
- https://negaratoto.com/contents/files/51147133329.pdfIn PDF document text
- http://heaig.org/editor/ckfinder/userfiles/files/zomodosajekaralukazejupar.pdfIn PDF document text
- https://djecijagarderoba.me/userfiles/file/12094184851.pdfIn PDF document text
- http://studioagm.it/userfiles/files/40497746244.pdfIn PDF document text
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/b21cd9edb0de276522dbcd1132dc2b5b/78000645130.pdfIn PDF document text
- https://sanipacific.com/attachment/file/nuvub.pdfIn PDF document text
- http://worldprint.su/userfiles/file/fedubebi.pdfIn PDF document text
- https://mongolia-volkslift.com/uploads/files/5388345515.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/xokerazizaraxarefalus.pdfIn PDF document text
- https://botroul.be/uploads/83804693882.pdfIn PDF document text
- http://xinyaoqiye.com/upload_fck/file/2021-9-5/20210905195728759764.pdfIn PDF document text
- http://christmaslandint.com/userfiles/pagokexetubiv.pdfIn PDF document text
- https://emailing-online.fr/uploads/userfiles/file/36521695112.pdfIn PDF document text
- http://www.gyndoktors.de/ckfinder/userfiles/files/1542718605.pdfIn PDF document text
- http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/xisejidubaj.pdfIn PDF document text
- https://tradingphrases.com/userfiles/files/rorisawugepozujezat.pdfIn PDF document text
- https://istanajp.net/contents/files/moxofiwupizarotaboge.pdfIn PDF document text
- https://goooinggroup.com/userfiles/files/20210920_052410.pdfIn PDF document text
- http://hoshitorionline.com/uploads/files/xemabuwuxaf.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_off0000b4a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4A0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ccb7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCB7 | 10184 bytes |
SHA-256: 1239ecbc7c1f6291adf3f1f46f822d358b106eeae52c3507f57b292d466834f0 |
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font_02_sfnt_off0000e396.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE396 | 15612 bytes |
SHA-256: 50a3c32e310755e5d57f5f096e03498a3f3e872b06627e773516e9b6401631d7 |
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