MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external links, including one to an algorithmically generated URL, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, further supporting a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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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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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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://philabc.ru/uplcv?utm_term=how+delete+duplicate+contacts+in+android PDF link annotation
- http://sp2wronki.pl/fotki/fotki/file/61401310935.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/pejowomuki.pdfIn PDF document text
- https://www.mmgrowersg.com/ckfinder/userfiles/files/89404835024.pdfIn PDF document text
- http://carbontuning.ru/file/soxulipudatotadabagoj.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/54279474457.pdfIn PDF document text
- https://thefencedocumentary.com/adminfiles/file/12191167596.pdfIn PDF document text
- http://pc75.net/upfiles/file/1631368657.pdfIn PDF document text
- http://av-jet.ru/userfiles/file/dojeloloxomapofokik.pdfIn PDF document text
- https://98ing.com/upload/ck/files/20210916_065902.pdfIn PDF document text
- https://ntiverification.com/userfiles/file/wunemerawiputawopev.pdfIn PDF document text
- http://iweldbot.com/ckfinder/pho/files/96424603088.pdfIn PDF document text
- http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/46603894392.pdfIn PDF document text
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/lvso688q4cfcl6rnf5of5000m1/kupel.pdfIn PDF document text
- http://biogenetec.tw/image/files/20210905_012751.pdfIn PDF document text
- https://www.adoz.cz/ckfinder/userfiles/files/toxitanap.pdfIn PDF document text
- https://fgcrubochi.com.ng/ckfinder/userfiles/files/68903035113.pdfIn PDF document text
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ce8b567d5---36201393753.pdfIn PDF document text
- https://supermagnum-bg.com/userfiles/file/nopasakotulolaxixubej.pdfIn PDF document text
- http://asbazainville.org/userfiles/file/petugezesadasajigivaz.pdfIn PDF document text
- https://oreopay57.com/ckfinder/userfiles/files/70672605727.pdfIn PDF document text
- http://park-seversk.ru/other/js/ckfinder/userfiles/files/3373002062.pdfIn PDF document text
- http://bebelino.ru/userfiles/file/34422100232.pdfIn PDF document text
- https://cmfnepal.org/userfiles/files/rilaxabajemaburasodu.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_off0000b684.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB684 | 15356 bytes |
SHA-256: aae96a1b90677c90aa2efd14dc7b7304bb1058696fce1289fad798a5fd6e4a37 |
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font_01_sfnt_off0000dd3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD3F | 10684 bytes |
SHA-256: 4eb6a52af3d607ab956a4a357da245d7a39f993d41ad6e418249c47b1b48ccff |
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font_02_sfnt_off0000f5de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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